gdz.top
Номер 2, страница 4, часть 2 - гдз по алгебре 8 класс учебник Мордкович, Александрова
Авторы: Мордкович А. Г., Александрова Л. А., Мишустина Т. Н., Тульчинская Е. Е., Семенов П. В.
Тип: Учебник
Издательство: Мнемозина
Год издания: 2019 - 2026
Часть: 2
Допущено Министерством просвещения Российской Федерации
Популярные ГДЗ в 8 классе
Часть 2. Задачи на повторение - номер 2, страница 4.
App\Models\Task {#1030 // resources/views/models/task/default.blade.php #connection: "mysql" #table: "tasks" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ "id" => 226807 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "4" "field_page_end" => null "field_url" => "/8-klass/algebra/mordkovich/zp-2" "field_display_title" => "2" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1037 #items: array:1 [ 0 => App\Models\Term {#1036 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 26 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "номер" "field_cases" => array:6 [ "field_accusative_case" => "номер" "field_creative_case" => "номером" "field_dative_case" => "номеру" "field_genitive_case" => "номера" "field_nominative_case" => "номер" "field_prepositional_case" => "номере" ] "field_short_name" => "№" ] #original: array:6 [ "id" => 26 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "номер" "field_cases" => array:6 [ "field_accusative_case" => "номер" "field_creative_case" => "номером" "field_dative_case" => "номеру" "field_genitive_case" => "номера" "field_nominative_case" => "номер" "field_prepositional_case" => "номере" ] "field_short_name" => "№" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_match" => null "breadcrumbs" => [] "edition_groups" => Illuminate\Database\Eloquent\Collection {#1035 #items: [] #escapeWhenCastingToString: false } "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1046 #items: array:1 [ 0 => App\Models\Branch {#1045 #connection: "mysql" #table: "branches" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ "id" => 226557 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_display_title" => null "field_branch_order" => "2" "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1050 #items: array:1 [ 0 => App\Models\Term {#1047 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:7 [ "id" => 31 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Часть" "field_cases" => array:6 [ …6] "field_page_check_not_needed" => "1" "field_short_name" => "ч." ] #original: array:7 [ "id" => 31 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Часть" "field_cases" => array:6 [ …6] "field_page_check_not_needed" => "1" "field_short_name" => "ч." ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_page_start" => "4" "field_branch_display" => "0" "field_branch_expanded" => "0" "field_display_branch_in_title" => "1" "field_display_task_interval" => "0" "field_display_branch_page" => "1" "field_branch_title_in_content" => "0" "field_navigation_title" => null "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_branch_cover" => array:1 [ 0 => "/media/algebra_08/mordkovich-z-21/covers/cover2.webp?ts=1734210650" ] "field_branch_covers" => array:1 [ 0 => array:4 [ "path" => "/media/algebra_08/mordkovich-z-21/covers/cover2.webp?ts=1734210650" "alt" => "часть 2" "width" => "1875" "height" => "2548" ] ] "book" => Illuminate\Database\Eloquent\Collection {#1082 #items: array:1 [ 0 => App\Models\Book {#1049 #connection: "mysql" #table: "books" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:50 [ "id" => 14 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_tree_default_status" => "tasks" "field_pages_status" => null "field_subject" => Illuminate\Database\Eloquent\Collection {#1051 #items: array:1 [ 0 => App\Models\Term {#1048 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:10 [ "id" => 6471 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Алгебра" "field_abbreviated_name" => null "field_cases" => array:6 [ …6] "field_foreign_lang_name" => null "field_short_name" => null "field_subject_type" => "technical_subject" "field_translit" => "algebra" ] #original: array:10 [ "id" => 6471 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Алгебра" "field_abbreviated_name" => null "field_cases" => array:6 [ …6] "field_foreign_lang_name" => null "field_short_name" => null "field_subject_type" => "technical_subject" "field_translit" => "algebra" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_class" => Illuminate\Database\Eloquent\Collection {#1052 #items: array:1 [ 0 => App\Models\Term {#1053 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 5457 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "8" "field_cases" => array:6 [ …6] "field_translit" => "vosmoj" ] #original: array:6 [ "id" => 5457 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "8" "field_cases" => array:6 [ …6] "field_translit" => "vosmoj" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_publisher" => Illuminate\Database\Eloquent\Collection {#1054 #items: array:1 [ 0 => App\Models\Term {#1055 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 5155 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Мнемозина" "field_cases" => null "field_translit" => "mnemozina" ] #original: array:6 [ "id" => 5155 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Мнемозина" "field_cases" => null "field_translit" => "mnemozina" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_author" => Illuminate\Database\Eloquent\Collection {#1056 #items: array:5 [ 0 => App\Models\Term {#1057 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:12 [ "id" => 5276 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Мордкович" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Александр" "field_patronymic" => "Григорьевич" "field_surname_rp" => null ] #original: array:12 [ "id" => 5276 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Мордкович" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Александр" "field_patronymic" => "Григорьевич" "field_surname_rp" => null ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 1 => App\Models\Term {#1058 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:12 [ "id" => 3690 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Александрова" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Лилия" "field_patronymic" => "Александровна" "field_surname_rp" => null ] #original: array:12 [ "id" => 3690 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Александрова" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Лилия" "field_patronymic" => "Александровна" "field_surname_rp" => null ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 2 => App\Models\Term {#1059 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:12 [ "id" => 5259 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Мишустина" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Татьяна" "field_patronymic" => "Николаевна" "field_surname_rp" => null ] #original: array:12 [ "id" => 5259 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Мишустина" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Татьяна" "field_patronymic" => "Николаевна" "field_surname_rp" => null ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 3 => App\Models\Term {#1060 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:12 [ "id" => 5965 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Тульчинская" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Елена" "field_patronymic" => "Ефимовна" "field_surname_rp" => null ] #original: array:12 [ "id" => 5965 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Тульчинская" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Елена" "field_patronymic" => "Ефимовна" "field_surname_rp" => null ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 4 => App\Models\Term {#1061 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:12 [ "id" => 5737 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Семенов" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Павел" "field_patronymic" => "Владимирович" "field_surname_rp" => null ] #original: array:12 [ "id" => 5737 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Семенов" "field_bio" => null "field_degree_rp" => null "field_foreign_lang_name" => null "field_foreign_lang_patronymic" => null "field_foreign_lang_surname" => null "field_name" => "Павел" "field_patronymic" => "Владимирович" "field_surname_rp" => null ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1062 #items: [] #escapeWhenCastingToString: false } "field_book_type" => Illuminate\Database\Eloquent\Collection {#1063 #items: array:1 [ 0 => App\Models\Term {#1064 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:10 [ "id" => 6671 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Учебник" "field_book_type_foreign" => null "field_cases" => array:6 [ …6] "field_plural_form" => null "field_short_name" => null "field_short_name_foreign" => null "field_translit" => "uchebnik" ] #original: array:10 [ "id" => 6671 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Учебник" "field_book_type_foreign" => null "field_cases" => array:6 [ …6] "field_plural_form" => null "field_short_name" => null "field_short_name_foreign" => null "field_translit" => "uchebnik" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_country" => Illuminate\Database\Eloquent\Collection {#1065 #items: array:1 [ 0 => App\Models\Term {#1066 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 9 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Россия" "field_cases" => array:6 [ …6] "field_translit" => "rossiya" ] #original: array:6 [ "id" => 9 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Россия" "field_cases" => array:6 [ …6] "field_translit" => "rossiya" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_city" => Illuminate\Database\Eloquent\Collection {#1067 #items: array:1 [ 0 => App\Models\Term {#1068 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 15 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Москва" "field_cases" => array:6 [ …6] "field_translit" => "moskva" ] #original: array:6 [ "id" => 15 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "Москва" "field_cases" => array:6 [ …6] "field_translit" => "moskva" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_series" => Illuminate\Database\Eloquent\Collection {#1069 #items: [] #escapeWhenCastingToString: false } "field_umk" => Illuminate\Database\Eloquent\Collection {#1070 #items: [] #escapeWhenCastingToString: false } "field_level_of_education" => Illuminate\Database\Eloquent\Collection {#1071 #items: [] #escapeWhenCastingToString: false } "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1072 #items: [] #escapeWhenCastingToString: false } "field_publication_number" => "26" "field_publication_type" => Illuminate\Database\Eloquent\Collection {#1073 #items: array:1 [ 0 => App\Models\Term {#1074 #connection: "mysql" #table: "terms" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 33 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "стереотипное" "field_cases" => array:6 [ …6] "field_translit" => "stereotipnoe" ] #original: array:6 [ "id" => 33 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "name" => "стереотипное" "field_cases" => array:6 [ …6] "field_translit" => "stereotipnoe" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "field_under_the_edition" => Illuminate\Database\Eloquent\Collection {#1075 #items: [] #escapeWhenCastingToString: false } "field_under_the_edition_degree" => null "field_cover_description" => null "field_publication_year" => "2019" "field_publication_year_until" => null "field_part" => "1, 2" "field_part_writing" => "Часть" "field_second_foreign_language" => null "field_for_whom" => "Учебник для общеобразовательных организаций" "field_allowed" => "Допущено Министерством просвещения Российской Федерации" "field_reserve_field" => null "field_link_to_source" => null "field_tasks_count" => "2014" "field_priority" => "4" "field_default_folder" => "/algebra_08/mordkovich-z-21/" "field_isbn" => null "field_cover" => array:2 [ 0 => "/media/algebra_08/mordkovich-z-21/covers/cover1.webp?ts=1734210650" 1 => "/media/algebra_08/mordkovich-z-21/covers/cover2.webp?ts=1734210650" ] "field_cover_alts" => array:2 [ 0 => "часть 1" 1 => "часть 2" ] "field_covers" => array:2 [ 0 => array:4 [ "path" => "/media/algebra_08/mordkovich-z-21/covers/cover1.webp?ts=1734210650" "alt" => "часть 1" "width" => "1919" "height" => "2577" ] 1 => array:4 [ "path" => "/media/algebra_08/mordkovich-z-21/covers/cover2.webp?ts=1734210650" "alt" => "часть 2" "width" => "1875" "height" => "2548" ] ] "field_popular_book" => null "field_recommended_books" => Illuminate\Database\Eloquent\Collection {#1076 #items: [] #escapeWhenCastingToString: false } "field_new_book" => Illuminate\Database\Eloquent\Collection {#1077 #items: [] #escapeWhenCastingToString: false } "field_old_book" => Illuminate\Database\Eloquent\Collection {#1078 #items: [] #escapeWhenCastingToString: false } "field_url" => "/8-klass/algebra/mordkovich" "field_cover_color" => Illuminate\Database\Eloquent\Collection {#1079 #items: [] #escapeWhenCastingToString: false } "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => "<!--Текст в низу страницы--> <h2> Чем порадует учеников алгебра в 8 классе? </h2> <p> Школьники все надеются, что программа обучения станет немного более понятной и простой. Особенно это касается алгебры - предмета со всех сторон весьма непростого. Но в восьмом классе их надеждам тоже не суждено сбыться. Мало того, что материал предстоит учить весьма обширный, количество домашних заданий увеличится, так еще добавится подготовка к предстоящим вскоре ОГЭ. Чтобы справиться со всем этим, учащимся стоит воспользоваться «<strong>ГДЗ по Алгебре 8 класс Учебник Мордкович (Мнемозина, 2021 г.)</strong>». </p> <p> Школьникам в этом году предстоит изучать такие сложные темы как: <ol> <li>Действия с алгебраическими дробями.</li> <li>Преобразование рациональных уравнений.</li> <li>Теория вероятности.</li> <li>Модуль числа.</li> <li>Линейные и квадратные неравенства.</li> <li>Комбинаторность, и т.д.</li> </ol> <p> Больше всего трудностей возникает при построении графиков функций, которые перед этим нужно найти. Подобрать правильное уравнение весьма непросто, особенно если нет понимания, как именно это делается. 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Г.</strong> позволяют им полноценно освоить все аспекты учебного материала, восполнить пробелы и проработать проблемные моменты, не затрачивая на это много времени и сил. </p> <p> Конечно, достигнуть хороших результатов можно только при определенных условиях:</p> <ol> <li>никогда нельзя забывать про изучение теории, даже если ее в учебнике самый минимум;</li> <li>домашние задания всегда нужно выполнять самостоятельно, без подсказок;</li> <li>сверяя решения по сборнику, стоит помнить о внимательности;</li> <li>если найдены ошибки, их необходимо не только исправить, но и понять, почему они возникли.</li> </ol> <p> Только такой подход гарантирует успешное освоение дисциплины. Однако у учеников всегда присутствует соблазн просто списать ответы. Принесет ли им это пользу? Безусловно, пару-тройку хороших оценок они получат, но что дальше? Преподаватель рано или поздно заметит обман и придется нагонять программу, которая стремительно несется вперед. К тому же, доверие учителя уже будет потеряно, что может положить конец отличной успеваемости. Так что рисковать явно не стоит. </p> <h2> Решебник - уникальное учебное пособие </h2> <p> У каждого ребенка свои таланты. Одним хорошо даются точные науки, другим - гуманитарные. Но практически все школьники испытывают трудности при освоении алгебры. Лишь единицы подростков легко ориентируются в материале, формулах и уравнениях. Остальным же требуется дополнительная помощь. Оказать ее могут <strong>подробные решения по алгебре 8 класс Мордковича</strong>. </p> <p> В справочнике размещены все необходимые сведения, которые помогут усвоить изучаемый параграф: <ul> <li>верные ответы на все номера;</li> <li>доскональные решения;</li> <li>подробные наглядные примеры;</li> <li>дополнительные примечания.</li> </ul> <p> Сборник создан группой профессиональных методистов, которые максимально подробно описали все действия, что нужно совершить ученикам, чтобы получить правильные результаты. 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Особенно это касается алгебры - предмета со всех сторон весьма непростого. Но в восьмом классе их надеждам тоже не суждено сбыться. Мало того, что материал предстоит учить весьма обширный, количество домашних заданий увеличится, так еще добавится подготовка к предстоящим вскоре ОГЭ. Чтобы справиться со всем этим, учащимся стоит воспользоваться «<strong>ГДЗ по Алгебре 8 класс Учебник Мордкович (Мнемозина, 2021 г.)</strong>». </p> <p> Школьникам в этом году предстоит изучать такие сложные темы как: <ol> <li>Действия с алгебраическими дробями.</li> <li>Преобразование рациональных уравнений.</li> <li>Теория вероятности.</li> <li>Модуль числа.</li> <li>Линейные и квадратные неравенства.</li> <li>Комбинаторность, и т.д.</li> </ol> <p> Больше всего трудностей возникает при построении графиков функций, которые перед этим нужно найти. Подобрать правильное уравнение весьма непросто, особенно если нет понимания, как именно это делается. 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Г.</strong> позволяют им полноценно освоить все аспекты учебного материала, восполнить пробелы и проработать проблемные моменты, не затрачивая на это много времени и сил. </p> <p> Конечно, достигнуть хороших результатов можно только при определенных условиях:</p> <ol> <li>никогда нельзя забывать про изучение теории, даже если ее в учебнике самый минимум;</li> <li>домашние задания всегда нужно выполнять самостоятельно, без подсказок;</li> <li>сверяя решения по сборнику, стоит помнить о внимательности;</li> <li>если найдены ошибки, их необходимо не только исправить, но и понять, почему они возникли.</li> </ol> <p> Только такой подход гарантирует успешное освоение дисциплины. Однако у учеников всегда присутствует соблазн просто списать ответы. Принесет ли им это пользу? Безусловно, пару-тройку хороших оценок они получат, но что дальше? Преподаватель рано или поздно заметит обман и придется нагонять программу, которая стремительно несется вперед. 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[] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 1 => App\Models\Branch {#1125 #connection: "mysql" #table: "branches" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ "id" => 226558 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_display_title" => "Задачи на повторение" "field_branch_order" => null "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1126 #items: [] #escapeWhenCastingToString: false } "field_page_start" => "4" "field_branch_display" => "0" "field_branch_expanded" => "0" "field_display_branch_in_title" => "1" "field_display_task_interval" => "0" "field_display_branch_page" => "1" "field_branch_title_in_content" => "0" "field_navigation_title" => null "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_branch_cover" => [] "field_branch_covers" => [] "book" => Illuminate\Database\Eloquent\Collection {#1127 #items: array:1 [ 0 => App\Models\Book {#1049} ] #escapeWhenCastingToString: false } "branch_parent" => Illuminate\Database\Eloquent\Collection {#1128 #items: array:1 [ 0 => App\Models\Branch {#1045} ] #escapeWhenCastingToString: false } ] #original: array:24 [ "id" => 226558 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_display_title" => "Задачи на повторение" "field_branch_order" => null "field_url" => null "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1126} "field_page_start" => "4" "field_branch_display" => "0" "field_branch_expanded" => "0" "field_display_branch_in_title" => "1" "field_display_task_interval" => "0" "field_display_branch_page" => "1" "field_branch_title_in_content" => "0" "field_navigation_title" => null "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_branch_cover" => [] "field_branch_covers" => [] "book" => Illuminate\Database\Eloquent\Collection {#1127} "branch_parent" => Illuminate\Database\Eloquent\Collection {#1128} ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "content" => Illuminate\Database\Eloquent\Collection {#1110 #items: array:5 [ 0 => App\Models\Element {#1093 #connection: "mysql" #table: "elements" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:7 [ "id" => 272150 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1085 #items: array:1 [ 0 => App\Models\Edition {#1094 #connection: "mysql" #table: "editions" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:21 [ "id" => 723 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Условие" "field_order" => "1" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1091 …2} "field_content_type" => "free" "field_content_mode" => "text, image" "field_page_content_mode" => "image" "field_content_text_checked" => null "field_page_content_text_checked" => "0" "field_solution_author" => "Автор" "field_moderator" => "vadim" "field_edition_type" => "statement" "field_root_dir" => "0-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1090 …2} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1089 …2} "field_process_formula" => "katex" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1088 …2} "field_content_source" => null ] #original: array:21 [ "id" => 723 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Условие" "field_order" => "1" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1091 …2} "field_content_type" => "free" "field_content_mode" => "text, image" "field_page_content_mode" => "image" "field_content_text_checked" => null "field_page_content_text_checked" => "0" "field_solution_author" => "Автор" "field_moderator" => "vadim" "field_edition_type" => "statement" "field_root_dir" => "0-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1090 …2} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1089 …2} "field_process_formula" => "katex" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1088 …2} "field_content_source" => null ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "task" => array:2 [ "refs" => "226807" "type" => "task" ] "text" => "<p><strong>2 а)</strong> $ \frac{1}{2} + 2\frac{2}{3} + 1\frac{1}{2} + 1\frac{1}{3}; $</p><p><strong>б)</strong> $ 3\frac{2}{5} \cdot 2\frac{3}{7} \cdot 5 \cdot 7; $</p><p><strong>в)</strong> $ \left(\frac{3}{14} - \frac{2}{7} + \frac{1}{2}\right) \cdot 14; $</p><p><strong>г)</strong> $ \left(12\frac{2}{9} + 24\frac{2}{3} - 16\frac{2}{15}\right) : 2. $</p>" "img" => array:1 [ 0 => array:5 [ "name" => "2-1.jpg" "alt" => null "width" => "1376" "height" => 328 "path" => "/media/algebra_08/mordkovich-z-21/0-2-zp/2-1.webp?ts=1734379513" ] ] ] #original: array:7 [ "id" => 272150 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1085} "task" => array:2 [ "refs" => "226807" "type" => "task" ] "text" => "<p><strong>2 а)</strong> $ \frac{1}{2} + 2\frac{2}{3} + 1\frac{1}{2} + 1\frac{1}{3}; $</p><p><strong>б)</strong> $ 3\frac{2}{5} \cdot 2\frac{3}{7} \cdot 5 \cdot 7; $</p><p><strong>в)</strong> $ \left(\frac{3}{14} - \frac{2}{7} + \frac{1}{2}\right) \cdot 14; $</p><p><strong>г)</strong> $ \left(12\frac{2}{9} + 24\frac{2}{3} - 16\frac{2}{15}\right) : 2. $</p>" "img" => array:1 [ 0 => array:5 [ "name" => "2-1.jpg" "alt" => null "width" => "1376" "height" => 328 "path" => "/media/algebra_08/mordkovich-z-21/0-2-zp/2-1.webp?ts=1734379513" ] ] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 1 => App\Models\Element {#1039 #connection: "mysql" #table: "elements" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 274770 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1131 #items: array:1 [ 0 => App\Models\Edition {#1112 #connection: "mysql" #table: "editions" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:21 [ "id" => 724 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Решение 1" "field_order" => "2" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1116 …2} "field_content_type" => "free" "field_content_mode" => "image" "field_page_content_mode" => "" "field_content_text_checked" => "0" "field_page_content_text_checked" => "0" "field_solution_author" => "Неизвестный" "field_moderator" => "vadim" "field_edition_type" => "solution" "field_root_dir" => "1-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1114 …2} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1117 …2} "field_process_formula" => "" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1115 …2} "field_content_source" => null ] #original: array:21 [ "id" => 724 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Решение 1" "field_order" => "2" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1116 …2} "field_content_type" => "free" "field_content_mode" => "image" "field_page_content_mode" => "" "field_content_text_checked" => "0" "field_page_content_text_checked" => "0" "field_solution_author" => "Неизвестный" "field_moderator" => "vadim" "field_edition_type" => "solution" "field_root_dir" => "1-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1114 …2} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1117 …2} "field_process_formula" => "" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1115 …2} "field_content_source" => null ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "task" => array:2 [ "refs" => "226807" "type" => "task" ] "img" => array:4 [ 0 => array:5 [ "name" => "2-1.png" "alt" => null "width" => "705" "height" => 462 "path" => "/media/algebra_08/mordkovich-z-21/1-2-zp/2-1.webp?ts=1734382284" ] 1 => array:5 [ "name" => "2-2.png" "alt" => null "width" => "705" "height" => 484 "path" => "/media/algebra_08/mordkovich-z-21/1-2-zp/2-2.webp?ts=1734382284" ] 2 => array:5 [ "name" => "2-3.png" "alt" => null "width" => "705" "height" => 484 "path" => "/media/algebra_08/mordkovich-z-21/1-2-zp/2-3.webp?ts=1734382284" ] 3 => array:5 [ "name" => "2-4.png" "alt" => null "width" => "705" "height" => 658 "path" => "/media/algebra_08/mordkovich-z-21/1-2-zp/2-4.webp?ts=1734382284" ] ] ] #original: array:6 [ "id" => 274770 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1131} "task" => array:2 [ "refs" => "226807" "type" => "task" ] "img" => array:4 [ 0 => array:5 [ "name" => "2-1.png" "alt" => null "width" => "705" "height" => 462 "path" => "/media/algebra_08/mordkovich-z-21/1-2-zp/2-1.webp?ts=1734382284" ] 1 => array:5 [ "name" => "2-2.png" "alt" => null "width" => "705" "height" => 484 "path" => "/media/algebra_08/mordkovich-z-21/1-2-zp/2-2.webp?ts=1734382284" ] 2 => array:5 [ "name" => "2-3.png" "alt" => null "width" => "705" "height" => 484 "path" => "/media/algebra_08/mordkovich-z-21/1-2-zp/2-3.webp?ts=1734382284" ] 3 => array:5 [ "name" => "2-4.png" "alt" => null "width" => "705" "height" => 658 "path" => "/media/algebra_08/mordkovich-z-21/1-2-zp/2-4.webp?ts=1734382284" ] ] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 2 => App\Models\Element {#1101 #connection: "mysql" #table: "elements" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 271193 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1092 #items: array:1 [ 0 => App\Models\Edition {#1100 #connection: "mysql" #table: "editions" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:21 [ "id" => 725 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Решение 2" "field_order" => "3" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1097 …2} "field_content_type" => "free" "field_content_mode" => "image" "field_page_content_mode" => "" "field_content_text_checked" => "0" "field_page_content_text_checked" => "0" "field_solution_author" => "Неизвестный" "field_moderator" => "vadim" "field_edition_type" => "solution" "field_root_dir" => "2-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1098 …2} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1095 …2} "field_process_formula" => "" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1096 …2} "field_content_source" => null ] #original: array:21 [ "id" => 725 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Решение 2" "field_order" => "3" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1097 …2} "field_content_type" => "free" "field_content_mode" => "image" "field_page_content_mode" => "" "field_content_text_checked" => "0" "field_page_content_text_checked" => "0" "field_solution_author" => "Неизвестный" "field_moderator" => "vadim" "field_edition_type" => "solution" "field_root_dir" => "2-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1098 …2} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1095 …2} "field_process_formula" => "" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1096 …2} "field_content_source" => null ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "task" => array:2 [ "refs" => "226807" "type" => "task" ] "img" => array:1 [ 0 => array:5 [ "name" => "2-1.png" "alt" => null "width" => "813" "height" => 457 "path" => "/media/algebra_08/mordkovich-z-21/2-2-zp/2-1.webp?ts=1734379278" ] ] ] #original: array:6 [ "id" => 271193 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1092} "task" => array:2 [ "refs" => "226807" "type" => "task" ] "img" => array:1 [ 0 => array:5 [ "name" => "2-1.png" "alt" => null "width" => "813" "height" => 457 "path" => "/media/algebra_08/mordkovich-z-21/2-2-zp/2-1.webp?ts=1734379278" ] ] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 3 => App\Models\Element {#1087 #connection: "mysql" #table: "elements" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 273163 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1111 #items: array:1 [ 0 => App\Models\Edition {#1084 #connection: "mysql" #table: "editions" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:21 [ "id" => 727 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Решение 4" "field_order" => "5" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1083 …2} "field_content_type" => "free" "field_content_mode" => "image" "field_page_content_mode" => "" "field_content_text_checked" => "0" "field_page_content_text_checked" => "0" "field_solution_author" => "Неизвестный" "field_moderator" => "vadim" "field_edition_type" => "solution" "field_root_dir" => "4-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1043 …2} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1041 …2} "field_process_formula" => "" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1034 …2} "field_content_source" => null ] #original: array:21 [ "id" => 727 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Решение 4" "field_order" => "5" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1083 …2} "field_content_type" => "free" "field_content_mode" => "image" "field_page_content_mode" => "" "field_content_text_checked" => "0" "field_page_content_text_checked" => "0" "field_solution_author" => "Неизвестный" "field_moderator" => "vadim" "field_edition_type" => "solution" "field_root_dir" => "4-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1043 …2} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1041 …2} "field_process_formula" => "" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1034 …2} "field_content_source" => null ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "task" => array:2 [ "refs" => "226807" "type" => "task" ] "img" => array:1 [ 0 => array:5 [ "name" => "2-1.png" "alt" => null "width" => "564" "height" => 481 "path" => "/media/algebra_08/mordkovich-z-21/4-2-zp/2-1.webp?ts=1734379623" ] ] ] #original: array:6 [ "id" => 273163 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1111} "task" => array:2 [ "refs" => "226807" "type" => "task" ] "img" => array:1 [ 0 => array:5 [ "name" => "2-1.png" "alt" => null "width" => "564" "height" => 481 "path" => "/media/algebra_08/mordkovich-z-21/4-2-zp/2-1.webp?ts=1734379623" ] ] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 4 => App\Models\Element {#1129 #connection: "mysql" #table: "elements" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 1336448 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1139 #items: array:1 [ 0 => App\Models\Edition {#1130 #connection: "mysql" #table: "editions" #primaryKey: "id" #keyType: "int" +incrementing: false #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:21 [ "id" => 5110 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Решение 6" "field_order" => "7" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1133 …2} "field_content_type" => "free" "field_content_mode" => "text" "field_page_content_mode" => "" "field_content_text_checked" => null "field_page_content_text_checked" => "0" "field_solution_author" => "Gemini 2.5 Pro" "field_moderator" => "vadim" "field_edition_type" => "solution" "field_root_dir" => "6-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1134 …2} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1135 …2} "field_process_formula" => "katex" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1136 …2} "field_content_source" => null ] #original: array:21 [ "id" => 5110 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "title" => "Решение 6" "field_order" => "7" "field_publisher" => Illuminate\Database\Eloquent\Collection {#1133 …2} "field_content_type" => "free" "field_content_mode" => "text" "field_page_content_mode" => "" "field_content_text_checked" => null "field_page_content_text_checked" => "0" "field_solution_author" => "Gemini 2.5 Pro" "field_moderator" => "vadim" "field_edition_type" => "solution" "field_root_dir" => "6-" "field_responsible" => Illuminate\Database\Eloquent\Collection {#1134 …2} "field_comment" => null "field_similar_book" => Illuminate\Database\Eloquent\Collection {#1135 …2} "field_process_formula" => "katex" "field_edition_group" => Illuminate\Database\Eloquent\Collection {#1136 …2} "field_content_source" => null ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "task" => array:2 [ "refs" => "226807" "type" => "task" ] "text" => "<p><strong>а)</strong> $\frac{1}{2} + 2\frac{2}{3} + 1\frac{1}{2} + 1\frac{1}{3}$</p><p>Для удобства вычислений сгруппируем слагаемые с одинаковыми знаменателями в дробной части, используя переместительное свойство сложения:</p><p>$(\frac{1}{2} + 1\frac{1}{2}) + (2\frac{2}{3} + 1\frac{1}{3})$</p><p>Вычислим сумму в каждой скобке. Для этого сложим отдельно целые и дробные части:</p><p>1) $\frac{1}{2} + 1\frac{1}{2} = 1 + (\frac{1}{2} + \frac{1}{2}) = 1 + \frac{2}{2} = 1 + 1 = 2$.</p><p>2) $2\frac{2}{3} + 1\frac{1}{3} = (2+1) + (\frac{2}{3} + \frac{1}{3}) = 3 + \frac{3}{3} = 3 + 1 = 4$.</p><p>Теперь сложим полученные результаты:</p><p>$2 + 4 = 6$.</p><p>Ответ: 6</p><p><strong>б)</strong> $3\frac{2}{5} \cdot 2\frac{3}{7} \cdot 5 \cdot 7$</p><p>Сначала преобразуем смешанные числа в неправильные дроби:</p><p>$3\frac{2}{5} = \frac{3 \cdot 5 + 2}{5} = \frac{17}{5}$</p><p>$2\frac{3}{7} = \frac{2 \cdot 7 + 3}{7} = \frac{17}{7}$</p><p>Подставим полученные дроби в исходное выражение:</p><p>$\frac{17}{5} \cdot \frac{17}{7} \cdot 5 \cdot 7$</p><p>Воспользуемся переместительным свойством умножения и сгруппируем множители для удобства сокращения:</p><p>$(\frac{17}{5} \cdot 5) \cdot (\frac{17}{7} \cdot 7)$</p><p>Выполним умножение в скобках, сократив знаменатели:</p><p>$\frac{17}{\sout{5}} \cdot \sout{5} = 17$</p><p>$\frac{17}{\sout{7}} \cdot \sout{7} = 17$</p><p>Осталось перемножить результаты:</p><p>$17 \cdot 17 = 289$.</p><p>Ответ: 289</p><p><strong>в)</strong> $(\frac{3}{14} - \frac{2}{7} + \frac{1}{2}) \cdot 14$</p><p>Используем распределительное свойство умножения. Умножим каждый член в скобках на 14:</p><p>$\frac{3}{14} \cdot 14 - \frac{2}{7} \cdot 14 + \frac{1}{2} \cdot 14$</p><p>Вычислим каждое произведение:</p><p>1) $\frac{3}{14} \cdot 14 = 3$.</p><p>2) $\frac{2}{7} \cdot 14 = 2 \cdot \frac{14}{7} = 2 \cdot 2 = 4$.</p><p>3) $\frac{1}{2} \cdot 14 = \frac{14}{2} = 7$.</p><p>Теперь выполним сложение и вычитание полученных чисел:</p><p>$3 - 4 + 7 = -1 + 7 = 6$.</p><p>Ответ: 6</p><p><strong>г)</strong> $(12\frac{2}{9} + 24\frac{2}{3} - 16\frac{2}{15}) : 2$</p><p>Воспользуемся распределительным свойством деления. Разделим каждое слагаемое в скобках на 2:</p><p>$12\frac{2}{9} : 2 + 24\frac{2}{3} : 2 - 16\frac{2}{15} : 2$</p><p>Чтобы разделить смешанное число на натуральное, можно разделить отдельно целую и дробную часть:</p><p>1) $12\frac{2}{9} : 2 = (12 + \frac{2}{9}) : 2 = 12:2 + \frac{2}{9}:2 = 6 + \frac{2}{9 \cdot 2} = 6 + \frac{1}{9} = 6\frac{1}{9}$.</p><p>2) $24\frac{2}{3} : 2 = (24 + \frac{2}{3}) : 2 = 24:2 + \frac{2}{3}:2 = 12 + \frac{2}{3 \cdot 2} = 12 + \frac{1}{3} = 12\frac{1}{3}$.</p><p>3) $16\frac{2}{15} : 2 = (16 + \frac{2}{15}) : 2 = 16:2 + \frac{2}{15}:2 = 8 + \frac{2}{15 \cdot 2} = 8 + \frac{1}{15} = 8\frac{1}{15}$.</p><p>Теперь подставим полученные значения в выражение:</p><p>$6\frac{1}{9} + 12\frac{1}{3} - 8\frac{1}{15}$</p><p>Сложим и вычтем целые части:</p><p>$6 + 12 - 8 = 10$.</p><p>Теперь сложим и вычтем дробные части, приведя их к общему знаменателю. Наименьший общий знаменатель для 9, 3 и 15 это 45:</p><p>$\frac{1}{9} + \frac{1}{3} - \frac{1}{15} = \frac{1 \cdot 5}{9 \cdot 5} + \frac{1 \cdot 15}{3 \cdot 15} - \frac{1 \cdot 3}{15 \cdot 3} = \frac{5}{45} + \frac{15}{45} - \frac{3}{45} = \frac{5+15-3}{45} = \frac{17}{45}$.</p><p>Объединим целую и дробную части:</p><p>$10 + \frac{17}{45} = 10\frac{17}{45}$.</p><p>Ответ: $10\frac{17}{45}$</p>" ] #original: array:6 [ "id" => 1336448 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1139} "task" => array:2 [ "refs" => "226807" "type" => "task" ] "text" => "<p><strong>а)</strong> $\frac{1}{2} + 2\frac{2}{3} + 1\frac{1}{2} + 1\frac{1}{3}$</p><p>Для удобства вычислений сгруппируем слагаемые с одинаковыми знаменателями в дробной части, используя переместительное свойство сложения:</p><p>$(\frac{1}{2} + 1\frac{1}{2}) + (2\frac{2}{3} + 1\frac{1}{3})$</p><p>Вычислим сумму в каждой скобке. Для этого сложим отдельно целые и дробные части:</p><p>1) $\frac{1}{2} + 1\frac{1}{2} = 1 + (\frac{1}{2} + \frac{1}{2}) = 1 + \frac{2}{2} = 1 + 1 = 2$.</p><p>2) $2\frac{2}{3} + 1\frac{1}{3} = (2+1) + (\frac{2}{3} + \frac{1}{3}) = 3 + \frac{3}{3} = 3 + 1 = 4$.</p><p>Теперь сложим полученные результаты:</p><p>$2 + 4 = 6$.</p><p>Ответ: 6</p><p><strong>б)</strong> $3\frac{2}{5} \cdot 2\frac{3}{7} \cdot 5 \cdot 7$</p><p>Сначала преобразуем смешанные числа в неправильные дроби:</p><p>$3\frac{2}{5} = \frac{3 \cdot 5 + 2}{5} = \frac{17}{5}$</p><p>$2\frac{3}{7} = \frac{2 \cdot 7 + 3}{7} = \frac{17}{7}$</p><p>Подставим полученные дроби в исходное выражение:</p><p>$\frac{17}{5} \cdot \frac{17}{7} \cdot 5 \cdot 7$</p><p>Воспользуемся переместительным свойством умножения и сгруппируем множители для удобства сокращения:</p><p>$(\frac{17}{5} \cdot 5) \cdot (\frac{17}{7} \cdot 7)$</p><p>Выполним умножение в скобках, сократив знаменатели:</p><p>$\frac{17}{\sout{5}} \cdot \sout{5} = 17$</p><p>$\frac{17}{\sout{7}} \cdot \sout{7} = 17$</p><p>Осталось перемножить результаты:</p><p>$17 \cdot 17 = 289$.</p><p>Ответ: 289</p><p><strong>в)</strong> $(\frac{3}{14} - \frac{2}{7} + \frac{1}{2}) \cdot 14$</p><p>Используем распределительное свойство умножения. Умножим каждый член в скобках на 14:</p><p>$\frac{3}{14} \cdot 14 - \frac{2}{7} \cdot 14 + \frac{1}{2} \cdot 14$</p><p>Вычислим каждое произведение:</p><p>1) $\frac{3}{14} \cdot 14 = 3$.</p><p>2) $\frac{2}{7} \cdot 14 = 2 \cdot \frac{14}{7} = 2 \cdot 2 = 4$.</p><p>3) $\frac{1}{2} \cdot 14 = \frac{14}{2} = 7$.</p><p>Теперь выполним сложение и вычитание полученных чисел:</p><p>$3 - 4 + 7 = -1 + 7 = 6$.</p><p>Ответ: 6</p><p><strong>г)</strong> $(12\frac{2}{9} + 24\frac{2}{3} - 16\frac{2}{15}) : 2$</p><p>Воспользуемся распределительным свойством деления. Разделим каждое слагаемое в скобках на 2:</p><p>$12\frac{2}{9} : 2 + 24\frac{2}{3} : 2 - 16\frac{2}{15} : 2$</p><p>Чтобы разделить смешанное число на натуральное, можно разделить отдельно целую и дробную часть:</p><p>1) $12\frac{2}{9} : 2 = (12 + \frac{2}{9}) : 2 = 12:2 + \frac{2}{9}:2 = 6 + \frac{2}{9 \cdot 2} = 6 + \frac{1}{9} = 6\frac{1}{9}$.</p><p>2) $24\frac{2}{3} : 2 = (24 + \frac{2}{3}) : 2 = 24:2 + \frac{2}{3}:2 = 12 + \frac{2}{3 \cdot 2} = 12 + \frac{1}{3} = 12\frac{1}{3}$.</p><p>3) $16\frac{2}{15} : 2 = (16 + \frac{2}{15}) : 2 = 16:2 + \frac{2}{15}:2 = 8 + \frac{2}{15 \cdot 2} = 8 + \frac{1}{15} = 8\frac{1}{15}$.</p><p>Теперь подставим полученные значения в выражение:</p><p>$6\frac{1}{9} + 12\frac{1}{3} - 8\frac{1}{15}$</p><p>Сложим и вычтем целые части:</p><p>$6 + 12 - 8 = 10$.</p><p>Теперь сложим и вычтем дробные части, приведя их к общему знаменателю. Наименьший общий знаменатель для 9, 3 и 15 это 45:</p><p>$\frac{1}{9} + \frac{1}{3} - \frac{1}{15} = \frac{1 \cdot 5}{9 \cdot 5} + \frac{1 \cdot 15}{3 \cdot 15} - \frac{1 \cdot 3}{15 \cdot 3} = \frac{5}{45} + \frac{15}{45} - \frac{3}{45} = \frac{5+15-3}{45} = \frac{17}{45}$.</p><p>Объединим целую и дробную части:</p><p>$10 + \frac{17}{45} = 10\frac{17}{45}$.</p><p>Ответ: $10\frac{17}{45}$</p>" ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "next" => array:2 [ "refs" => "226808" "type" => "task" ] "previous" => array:2 [ "refs" => "226806" "type" => "task" ] "book" => Illuminate\Database\Eloquent\Collection {#1104 #items: array:1 [ 0 => App\Models\Book {#1049} ] #escapeWhenCastingToString: false } "page" => Illuminate\Database\Eloquent\Collection {#1109 #items: array:1 [ 0 => App\Models\BookPage {#1105 #connection: "mysql" #table: "book_pages" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:21 [ "id" => 865207 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "4" "field_url" => "/8-klass/algebra/mordkovich/page-2-4" "field_display_title" => "4" "field_folder" => "2" "field_image_name" => "4" "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#1042 #items: array:1 [ 0 => App\Models\Branch {#1121} ] #escapeWhenCastingToString: false } "field_weight" => "0" "field_book_parent" => Illuminate\Database\Eloquent\Collection {#1108 #items: array:1 [ 0 => App\Models\Book {#1049} ] #escapeWhenCastingToString: false } "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "edition_groups" => Illuminate\Database\Eloquent\Collection {#1040 #items: [] #escapeWhenCastingToString: false } "content" => Illuminate\Database\Eloquent\Collection {#1147 #items: array:1 [ 0 => App\Models\Element {#1146 #connection: "mysql" #table: "elements" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:6 [ "id" => 1039385 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1148 …2} "book_page" => array:2 [ …2] "img" => array:1 [ …1] ] #original: array:6 [ "id" => 1039385 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "edition" => Illuminate\Database\Eloquent\Collection {#1148 …2} "book_page" => array:2 [ …2] "img" => array:1 [ …1] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } "next" => array:2 [ "refs" => "865208" "type" => "book_page" ] "previous" => array:2 [ "refs" => "865206" "type" => "book_page" ] "tasks" => Illuminate\Database\Eloquent\Collection {#1235 #items: array:7 [ 0 => App\Models\Task {#1249 #connection: "mysql" #table: "tasks" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ "id" => 226806 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "4" "field_page_end" => null "field_url" => "/8-klass/algebra/mordkovich/zp-1" "field_display_title" => "1" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1250 …2} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_match" => null "breadcrumbs" => [] "edition_groups" => Illuminate\Database\Eloquent\Collection {#1251 …2} "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1252 …2} "parent_branches" => Illuminate\Database\Eloquent\Collection {#1253 …2} "content" => Illuminate\Database\Eloquent\Collection {#1256 …2} "next" => array:2 [ …2] "previous" => array:2 [ …2] "book" => Illuminate\Database\Eloquent\Collection {#1265 …2} "page" => array:2 [ …2] ] #original: array:24 [ "id" => 226806 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "4" "field_page_end" => null "field_url" => "/8-klass/algebra/mordkovich/zp-1" "field_display_title" => "1" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1250 …2} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_match" => null "breadcrumbs" => [] "edition_groups" => Illuminate\Database\Eloquent\Collection {#1251 …2} "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1252 …2} "parent_branches" => Illuminate\Database\Eloquent\Collection {#1253 …2} "content" => Illuminate\Database\Eloquent\Collection {#1256 …2} "next" => array:2 [ …2] "previous" => array:2 [ …2] "book" => Illuminate\Database\Eloquent\Collection {#1265 …2} "page" => array:2 [ …2] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 1 => App\Models\Task {#1255 #connection: "mysql" #table: "tasks" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ "id" => 226807 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "4" "field_page_end" => null "field_url" => "/8-klass/algebra/mordkovich/zp-2" "field_display_title" => "2" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1254 …2} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_match" => null "breadcrumbs" => [] "edition_groups" => Illuminate\Database\Eloquent\Collection {#1264 …2} "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1262 …2} "parent_branches" => Illuminate\Database\Eloquent\Collection {#1261 …2} "content" => Illuminate\Database\Eloquent\Collection {#1263 …2} "next" => array:2 [ …2] "previous" => array:2 [ …2] "book" => Illuminate\Database\Eloquent\Collection {#1259 …2} "page" => array:2 [ …2] ] #original: array:24 [ "id" => 226807 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "4" "field_page_end" => null "field_url" => "/8-klass/algebra/mordkovich/zp-2" "field_display_title" => "2" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1254 …2} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_match" => null "breadcrumbs" => [] "edition_groups" => Illuminate\Database\Eloquent\Collection {#1264 …2} "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1262 …2} "parent_branches" => Illuminate\Database\Eloquent\Collection {#1261 …2} "content" => Illuminate\Database\Eloquent\Collection {#1263 …2} "next" => array:2 [ …2] "previous" => array:2 [ …2] "book" => Illuminate\Database\Eloquent\Collection {#1259 …2} "page" => array:2 [ …2] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 2 => App\Models\Task {#1257 #connection: "mysql" #table: "tasks" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ "id" => 226808 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "4" "field_page_end" => null "field_url" => "/8-klass/algebra/mordkovich/zp-3" "field_display_title" => "3" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1260 …2} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_match" => null "breadcrumbs" => [] "edition_groups" => Illuminate\Database\Eloquent\Collection {#1258 …2} "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1277 …2} "parent_branches" => Illuminate\Database\Eloquent\Collection {#1278 …2} "content" => Illuminate\Database\Eloquent\Collection {#1281 …2} "next" => array:2 [ …2] "previous" => array:2 [ …2] "book" => Illuminate\Database\Eloquent\Collection {#1290 …2} "page" => array:2 [ …2] ] #original: array:24 [ "id" => 226808 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "4" "field_page_end" => null "field_url" => "/8-klass/algebra/mordkovich/zp-3" "field_display_title" => "3" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1260 …2} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_match" => null "breadcrumbs" => [] "edition_groups" => Illuminate\Database\Eloquent\Collection {#1258 …2} "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1277 …2} "parent_branches" => Illuminate\Database\Eloquent\Collection {#1278 …2} "content" => Illuminate\Database\Eloquent\Collection {#1281 …2} "next" => array:2 [ …2] "previous" => array:2 [ …2] "book" => Illuminate\Database\Eloquent\Collection {#1290 …2} "page" => array:2 [ …2] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } 3 => App\Models\Task {#1280 #connection: "mysql" #table: "tasks" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ "id" => 226809 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "4" "field_page_end" => null "field_url" => "/8-klass/algebra/mordkovich/zp-4" "field_display_title" => "4" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1279 …2} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_match" => null "breadcrumbs" => [] "edition_groups" => Illuminate\Database\Eloquent\Collection {#1289 …2} "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1287 …2} "parent_branches" => Illuminate\Database\Eloquent\Collection {#1286 …2} "content" => Illuminate\Database\Eloquent\Collection {#1282 …2} "next" => array:2 [ …2] "previous" => array:2 [ …2] "book" => 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#connection: "mysql" #table: "tasks" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ …24] #original: array:24 [ …24] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } 6 => App\Models\Task {#1320 #connection: "mysql" #table: "tasks" #primaryKey: "id" #keyType: "int" +incrementing: true #with: [] #withCount: [] +preventsLazyLoading: false #perPage: 15 +exists: true +wasRecentlyCreated: false #escapeWhenCastingToString: false #attributes: array:24 [ …24] #original: array:24 [ …24] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ …1] } ] #escapeWhenCastingToString: false } ] #original: array:21 [ "id" => 865207 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "4" "field_url" => "/8-klass/algebra/mordkovich/page-2-4" "field_display_title" => "4" "field_folder" => "2" "field_image_name" => "4" "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#1042} "field_weight" => "0" "field_book_parent" => Illuminate\Database\Eloquent\Collection {#1108} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "edition_groups" => Illuminate\Database\Eloquent\Collection {#1040} "content" => Illuminate\Database\Eloquent\Collection {#1147} "next" => array:2 [ "refs" => "865208" "type" => "book_page" ] "previous" => array:2 [ "refs" => "865206" "type" => "book_page" ] "tasks" => Illuminate\Database\Eloquent\Collection {#1235} ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] } ] #escapeWhenCastingToString: false } ] #original: array:24 [ "id" => 226807 "created_at" => "2026-04-10 13:58:26" "updated_at" => null "field_page_start" => "4" "field_page_end" => null "field_url" => "/8-klass/algebra/mordkovich/zp-2" "field_display_title" => "2" "field_outside_task" => null "field_task_type" => Illuminate\Database\Eloquent\Collection {#1037} "field_metatags_title" => null "field_metatags_description" => null "field_h1" => null "field_description_top" => null "field_description_bottom" => null "field_match" => null "breadcrumbs" => [] "edition_groups" => Illuminate\Database\Eloquent\Collection {#1035} "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1046} "parent_branches" => Illuminate\Database\Eloquent\Collection {#1113} "content" => Illuminate\Database\Eloquent\Collection {#1110} "next" => array:2 [ "refs" => "226808" "type" => "task" ] "previous" => array:2 [ "refs" => "226806" "type" => "task" ] "book" => Illuminate\Database\Eloquent\Collection {#1104} "page" => array:2 [ "refs" => "865207" "type" => "book_page" ] ] #changes: [] #casts: [] #classCastCache: [] #attributeCastCache: [] #dateFormat: null #appends: [] #dispatchesEvents: [] #observables: [] #relations: [] #touches: [] +timestamps: true +usesUniqueIds: false #hidden: [] #visible: [] #fillable: [] #guarded: array:1 [ 0 => "*" ] }
№2 (с. 4)
Условие. №2 (с. 4)
скриншот условия
2 а) $ \frac{1}{2} + 2\frac{2}{3} + 1\frac{1}{2} + 1\frac{1}{3}; $
б) $ 3\frac{2}{5} \cdot 2\frac{3}{7} \cdot 5 \cdot 7; $
в) $ \left(\frac{3}{14} - \frac{2}{7} + \frac{1}{2}\right) \cdot 14; $
г) $ \left(12\frac{2}{9} + 24\frac{2}{3} - 16\frac{2}{15}\right) : 2. $
Решение 1. №2 (с. 4)
Решение 2. №2 (с. 4)
Решение 4. №2 (с. 4)
Решение 6. №2 (с. 4)
а) $\frac{1}{2} + 2\frac{2}{3} + 1\frac{1}{2} + 1\frac{1}{3}$
Для удобства вычислений сгруппируем слагаемые с одинаковыми знаменателями в дробной части, используя переместительное свойство сложения:
$(\frac{1}{2} + 1\frac{1}{2}) + (2\frac{2}{3} + 1\frac{1}{3})$
Вычислим сумму в каждой скобке. Для этого сложим отдельно целые и дробные части:
1) $\frac{1}{2} + 1\frac{1}{2} = 1 + (\frac{1}{2} + \frac{1}{2}) = 1 + \frac{2}{2} = 1 + 1 = 2$.
2) $2\frac{2}{3} + 1\frac{1}{3} = (2+1) + (\frac{2}{3} + \frac{1}{3}) = 3 + \frac{3}{3} = 3 + 1 = 4$.
Теперь сложим полученные результаты:
$2 + 4 = 6$.
Ответ: 6
б) $3\frac{2}{5} \cdot 2\frac{3}{7} \cdot 5 \cdot 7$
Сначала преобразуем смешанные числа в неправильные дроби:
$3\frac{2}{5} = \frac{3 \cdot 5 + 2}{5} = \frac{17}{5}$
$2\frac{3}{7} = \frac{2 \cdot 7 + 3}{7} = \frac{17}{7}$
Подставим полученные дроби в исходное выражение:
$\frac{17}{5} \cdot \frac{17}{7} \cdot 5 \cdot 7$
Воспользуемся переместительным свойством умножения и сгруппируем множители для удобства сокращения:
$(\frac{17}{5} \cdot 5) \cdot (\frac{17}{7} \cdot 7)$
Выполним умножение в скобках, сократив знаменатели:
$\frac{17}{\sout{5}} \cdot \sout{5} = 17$
$\frac{17}{\sout{7}} \cdot \sout{7} = 17$
Осталось перемножить результаты:
$17 \cdot 17 = 289$.
Ответ: 289
в) $(\frac{3}{14} - \frac{2}{7} + \frac{1}{2}) \cdot 14$
Используем распределительное свойство умножения. Умножим каждый член в скобках на 14:
$\frac{3}{14} \cdot 14 - \frac{2}{7} \cdot 14 + \frac{1}{2} \cdot 14$
Вычислим каждое произведение:
1) $\frac{3}{14} \cdot 14 = 3$.
2) $\frac{2}{7} \cdot 14 = 2 \cdot \frac{14}{7} = 2 \cdot 2 = 4$.
3) $\frac{1}{2} \cdot 14 = \frac{14}{2} = 7$.
Теперь выполним сложение и вычитание полученных чисел:
$3 - 4 + 7 = -1 + 7 = 6$.
Ответ: 6
г) $(12\frac{2}{9} + 24\frac{2}{3} - 16\frac{2}{15}) : 2$
Воспользуемся распределительным свойством деления. Разделим каждое слагаемое в скобках на 2:
$12\frac{2}{9} : 2 + 24\frac{2}{3} : 2 - 16\frac{2}{15} : 2$
Чтобы разделить смешанное число на натуральное, можно разделить отдельно целую и дробную часть:
1) $12\frac{2}{9} : 2 = (12 + \frac{2}{9}) : 2 = 12:2 + \frac{2}{9}:2 = 6 + \frac{2}{9 \cdot 2} = 6 + \frac{1}{9} = 6\frac{1}{9}$.
2) $24\frac{2}{3} : 2 = (24 + \frac{2}{3}) : 2 = 24:2 + \frac{2}{3}:2 = 12 + \frac{2}{3 \cdot 2} = 12 + \frac{1}{3} = 12\frac{1}{3}$.
3) $16\frac{2}{15} : 2 = (16 + \frac{2}{15}) : 2 = 16:2 + \frac{2}{15}:2 = 8 + \frac{2}{15 \cdot 2} = 8 + \frac{1}{15} = 8\frac{1}{15}$.
Теперь подставим полученные значения в выражение:
$6\frac{1}{9} + 12\frac{1}{3} - 8\frac{1}{15}$
Сложим и вычтем целые части:
$6 + 12 - 8 = 10$.
Теперь сложим и вычтем дробные части, приведя их к общему знаменателю. Наименьший общий знаменатель для 9, 3 и 15 это 45:
$\frac{1}{9} + \frac{1}{3} - \frac{1}{15} = \frac{1 \cdot 5}{9 \cdot 5} + \frac{1 \cdot 15}{3 \cdot 15} - \frac{1 \cdot 3}{15 \cdot 3} = \frac{5}{45} + \frac{15}{45} - \frac{3}{45} = \frac{5+15-3}{45} = \frac{17}{45}$.
Объединим целую и дробную части:
$10 + \frac{17}{45} = 10\frac{17}{45}$.
Ответ: $10\frac{17}{45}$
Другие задания:
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