Страница 229 - гдз по алгебре 7 класс учебник Мерзляк, Полонский

Алгебра, 7 класс Учебник, авторы: Мерзляк Аркадий Григорьевич, Полонский Виталий Борисович, Якир Михаил Семёнович, издательство Просвещение, Москва, 2016 - 2022

Авторы: Мерзляк А. Г., Полонский В. Б., Якир М. С.

Тип: Учебник

Издательство: Просвещение, Вентана-граф

Год издания: 2016 - 2022

ISBN: 978-5-360-07440-3

Рекомендовано Министерством образования и науки Российской Федерации

Cтраница 229

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          #attributes: array:21 [
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            "created_at" => "2026-04-10 13:58:26"
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            "field_display_title" => "230"
            "field_folder" => "1"
            "field_image_name" => "230"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#6670
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#6671
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "edition_groups" => Illuminate\Database\Eloquent\Collection {#6672
              #items: []
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#6682
              #items: array:1 [
                0 => App\Models\Element {#6681
                  #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 [ …6]
                  #original: array:6 [ …6]
                  #changes: []
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                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
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                  #touches: []
                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1377437"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "1377435"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#6675
              #items: array:14 [
                0 => App\Models\Task {#6699
                  #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: []
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                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Task {#6705
                  #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: []
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                2 => App\Models\Task {#6711
                  #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: []
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                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                3 => App\Models\Task {#6733
                  #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]
                }
                4 => App\Models\Task {#6755
                  #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]
                }
                5 => App\Models\Task {#6777
                  #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 {#6799
                  #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]
                }
                7 => App\Models\Task {#6821
                  #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]
                }
                8 => App\Models\Task {#6843
                  #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]
                }
                9 => App\Models\Task {#6865
                  #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: []
                   …3
                }
                10 => App\Models\Task {#6887 …30}
                11 => App\Models\Task {#6909 …30}
                12 => App\Models\Task {#6931 …30}
                13 => App\Models\Task {#6953 …30}
              ]
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:21 [
            "id" => 1377436
            "created_at" => "2026-04-10 13:58:26"
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            "field_display_title" => "230"
            "field_folder" => "1"
            "field_image_name" => "230"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#6670}
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#6671}
            "field_metatags_title" => null
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            "edition_groups" => Illuminate\Database\Eloquent\Collection {#6672}
            "content" => Illuminate\Database\Eloquent\Collection {#6682}
            "next" => array:2 [
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            ]
            "previous" => array:2 [
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            "tasks" => Illuminate\Database\Eloquent\Collection {#6675}
          ]
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            0 => "*"
          ]
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      ]
      #escapeWhenCastingToString: false
    }
    "previous" => Illuminate\Database\Eloquent\Collection {#6662
      #items: array:1 [
        0 => App\Models\BookPage {#4659
          #connection: "mysql"
          #table: "book_pages"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
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          #attributes: array:21 [
            "id" => 1377434
            "created_at" => "2026-04-10 13:58:26"
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            "field_display_title" => "228"
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            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#4656
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#4662
              #items: array:1 [
                0 => App\Models\Book {#4663 …30}
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            "content" => Illuminate\Database\Eloquent\Collection {#4694
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                0 => App\Models\Element {#4695 …30}
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                0 => App\Models\Task {#4704 …30}
                1 => App\Models\Task {#4842 …30}
                2 => App\Models\Task {#4980 …30}
                3 => App\Models\Task {#5118 …30}
                4 => App\Models\Task {#5256 …30}
                5 => App\Models\Task {#5394 …30}
                6 => App\Models\Task {#5532 …30}
                7 => App\Models\Task {#5670 …30}
                8 => App\Models\Task {#5868 …30}
                9 => App\Models\Task {#6066 …30}
                10 => App\Models\Task {#6264 …30}
                11 => App\Models\Task {#6462 …30}
              ]
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            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#4656}
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#4662}
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            "tasks" => Illuminate\Database\Eloquent\Collection {#4703}
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            0 => "*"
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      ]
      #escapeWhenCastingToString: false
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    "tasks" => Illuminate\Database\Eloquent\Collection {#1066
      #items: array:11 [
        0 => App\Models\Task {#1096
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
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          #perPage: 15
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            "created_at" => "2026-04-10 13:58:26"
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            "field_display_title" => "1160"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1100
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                0 => App\Models\Term {#1097 …30}
              ]
              #escapeWhenCastingToString: false
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            "field_metatags_description" => null
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              #items: []
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            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1137
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                0 => App\Models\Branch {#1098 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1173
              #items: array:2 [
                0 => App\Models\Branch {#1181 …30}
                1 => App\Models\Branch {#1186 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1170
              #items: array:7 [
                0 => App\Models\Element {#1159 …30}
                1 => App\Models\Element {#1195 …30}
                2 => App\Models\Element {#1158 …30}
                3 => App\Models\Element {#1151 …30}
                4 => App\Models\Element {#1174 …30}
                5 => App\Models\Element {#1141 …30}
                6 => App\Models\Element {#1203 …30}
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            "book" => Illuminate\Database\Eloquent\Collection {#1161
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
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              "refs" => "1377435"
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            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1100}
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            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1099}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1137}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1173}
            "content" => Illuminate\Database\Eloquent\Collection {#1170}
            "next" => array:2 [
              "refs" => "1376804"
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            "previous" => array:2 [
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            "book" => Illuminate\Database\Eloquent\Collection {#1161}
            "page" => array:2 [
              "refs" => "1377435"
              "type" => "book_page"
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          #guarded: array:1 [
            0 => "*"
          ]
        }
        1 => App\Models\Task {#1135
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
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          #perPage: 15
          +exists: true
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          #escapeWhenCastingToString: false
          #attributes: array:24 [
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            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "229"
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            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1161"
            "field_display_title" => "1161"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1178
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                0 => App\Models\Term {#1097 …30}
              ]
              #escapeWhenCastingToString: false
            }
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            "field_metatags_description" => null
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            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1163
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1162
              #items: array:1 [
                0 => App\Models\Branch {#1181 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1164
              #items: array:2 [
                0 => App\Models\Branch {#1181 …30}
                1 => App\Models\Branch {#1186 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1165
              #items: array:7 [
                0 => App\Models\Element {#1220 …30}
                1 => App\Models\Element {#1230 …30}
                2 => App\Models\Element {#1222 …30}
                3 => App\Models\Element {#1224 …30}
                4 => App\Models\Element {#1228 …30}
                5 => App\Models\Element {#1226 …30}
                6 => App\Models\Element {#1232 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376805"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376803"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1218
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377435"
              "type" => "book_page"
            ]
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            "id" => 1376804
            "created_at" => "2026-04-10 13:58:26"
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            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1161"
            "field_display_title" => "1161"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1178}
            "field_metatags_title" => null
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            "field_h1" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1163}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1162}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1164}
            "content" => Illuminate\Database\Eloquent\Collection {#1165}
            "next" => array:2 [
              "refs" => "1376805"
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            ]
            "previous" => array:2 [
              "refs" => "1376803"
              "type" => "task"
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            "book" => Illuminate\Database\Eloquent\Collection {#1218}
            "page" => array:2 [
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              "type" => "book_page"
            ]
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          #visible: []
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          #guarded: array:1 [
            0 => "*"
          ]
        }
        2 => App\Models\Task {#1167
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
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          #perPage: 15
          +exists: true
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          #attributes: array:24 [
            "id" => 1376805
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "229"
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            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1162"
            "field_display_title" => "1162"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1166
              #items: array:1 [
                0 => App\Models\Term {#1097 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
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            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1217
              #items: []
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            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1216
              #items: array:1 [
                0 => App\Models\Branch {#1181 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1215
              #items: array:2 [
                0 => App\Models\Branch {#1181 …30}
                1 => App\Models\Branch {#1186 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1214
              #items: array:7 [
                0 => App\Models\Element {#1242 …30}
                1 => App\Models\Element {#1252 …30}
                2 => App\Models\Element {#1244 …30}
                3 => App\Models\Element {#1246 …30}
                4 => App\Models\Element {#1250 …30}
                5 => App\Models\Element {#1248 …30}
                6 => App\Models\Element {#1254 …30}
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            }
            "next" => array:2 [
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            "previous" => array:2 [
              "refs" => "1376804"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1240
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
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              "type" => "book_page"
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            "id" => 1376805
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            "field_page_start" => "229"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1162"
            "field_display_title" => "1162"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1166}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1217}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1216}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1215}
            "content" => Illuminate\Database\Eloquent\Collection {#1214}
            "next" => array:2 [
              "refs" => "1376806"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376804"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1240}
            "page" => array:2 [
              "refs" => "1377435"
              "type" => "book_page"
            ]
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            0 => "*"
          ]
        }
        3 => App\Models\Task {#1211
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
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          #escapeWhenCastingToString: false
          #attributes: array:24 [
            "id" => 1376806
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "229"
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            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1163"
            "field_display_title" => "1163"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1212
              #items: array:1 [
                0 => App\Models\Term {#1097 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1239
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1238
              #items: array:1 [
                0 => App\Models\Branch {#1181 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1237
              #items: array:2 [
                0 => App\Models\Branch {#1181 …30}
                1 => App\Models\Branch {#1186 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1236
              #items: array:7 [
                0 => App\Models\Element {#1264 …30}
                1 => App\Models\Element {#1274 …30}
                2 => App\Models\Element {#1266 …30}
                3 => App\Models\Element {#1268 …30}
                4 => App\Models\Element {#1272 …30}
                5 => App\Models\Element {#1270 …30}
                6 => App\Models\Element {#1276 …30}
              ]
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            }
            "next" => array:2 [
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            "previous" => array:2 [
              "refs" => "1376805"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1262
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377435"
              "type" => "book_page"
            ]
          ]
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            "id" => 1376806
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            "updated_at" => null
            "field_page_start" => "229"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1163"
            "field_display_title" => "1163"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1212}
            "field_metatags_title" => null
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            "field_h1" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1239}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1238}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1237}
            "content" => Illuminate\Database\Eloquent\Collection {#1236}
            "next" => array:2 [
              "refs" => "1376807"
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            ]
            "previous" => array:2 [
              "refs" => "1376805"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1262}
            "page" => array:2 [
              "refs" => "1377435"
              "type" => "book_page"
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            0 => "*"
          ]
        }
        4 => App\Models\Task {#1234
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
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          #perPage: 15
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          #attributes: array:24 [
            "id" => 1376807
            "created_at" => "2026-04-10 13:58:26"
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            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1164"
            "field_display_title" => "1164"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1235
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                0 => App\Models\Term {#1097 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
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            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1261
              #items: []
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            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1260
              #items: array:1 [
                0 => App\Models\Branch {#1181 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1259
              #items: array:2 [
                0 => App\Models\Branch {#1181 …30}
                1 => App\Models\Branch {#1186 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1258
              #items: array:7 [
                0 => App\Models\Element {#1286 …30}
                1 => App\Models\Element {#1296 …30}
                2 => App\Models\Element {#1288 …30}
                3 => App\Models\Element {#1290 …30}
                4 => App\Models\Element {#1294 …30}
                5 => App\Models\Element {#1292 …30}
                6 => App\Models\Element {#1298 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376808"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376806"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1284
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377435"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1376807
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "229"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1164"
            "field_display_title" => "1164"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1235}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1261}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1260}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1259}
            "content" => Illuminate\Database\Eloquent\Collection {#1258}
            "next" => array:2 [
              "refs" => "1376808"
              "type" => "task"
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            "previous" => array:2 [
              "refs" => "1376806"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1284}
            "page" => array:2 [
              "refs" => "1377435"
              "type" => "book_page"
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          #guarded: array:1 [
            0 => "*"
          ]
        }
        5 => App\Models\Task {#1256
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
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          #attributes: array:24 [
            "id" => 1376808
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "229"
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            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1165"
            "field_display_title" => "1165"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1257
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                0 => App\Models\Term {#1097 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
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            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1283
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1282
              #items: array:1 [
                0 => App\Models\Branch {#1181 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1281
              #items: array:2 [
                0 => App\Models\Branch {#1181 …30}
                1 => App\Models\Branch {#1186 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1280
              #items: array:7 [
                0 => App\Models\Element {#1308 …30}
                1 => App\Models\Element {#1318 …30}
                2 => App\Models\Element {#1310 …30}
                3 => App\Models\Element {#1312 …30}
                4 => App\Models\Element {#1316 …30}
                5 => App\Models\Element {#1314 …30}
                6 => App\Models\Element {#1320 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376809"
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            ]
            "previous" => array:2 [
              "refs" => "1376807"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1306
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377435"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1376808
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            "updated_at" => null
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            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1165"
            "field_display_title" => "1165"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1257}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1283}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1282}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1281}
            "content" => Illuminate\Database\Eloquent\Collection {#1280}
            "next" => array:2 [
              "refs" => "1376809"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376807"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1306}
            "page" => array:2 [
              "refs" => "1377435"
              "type" => "book_page"
            ]
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          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        6 => App\Models\Task {#1278
          #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" => 1376809
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "229"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1166"
            "field_display_title" => "1166"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1279
              #items: array:1 [
                0 => App\Models\Term {#1097 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1305
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1304
              #items: array:1 [
                0 => App\Models\Branch {#1181 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1303
              #items: array:2 [
                0 => App\Models\Branch {#1181 …30}
                1 => App\Models\Branch {#1186 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1302
              #items: array:7 [
                0 => App\Models\Element {#1330 …30}
                1 => App\Models\Element {#1340 …30}
                2 => App\Models\Element {#1332 …30}
                3 => App\Models\Element {#1334 …30}
                4 => App\Models\Element {#1338 …30}
                5 => App\Models\Element {#1336 …30}
                6 => App\Models\Element {#1342 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376810"
              "type" => "task"
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            "previous" => array:2 [
              "refs" => "1376808"
              "type" => "task"
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            "book" => Illuminate\Database\Eloquent\Collection {#1328
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
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              "type" => "book_page"
            ]
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            "id" => 1376809
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            "field_display_title" => "1166"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1279}
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            "breadcrumbs" => []
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            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1304}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1303}
            "content" => Illuminate\Database\Eloquent\Collection {#1302}
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              "type" => "task"
            ]
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            "book" => Illuminate\Database\Eloquent\Collection {#1328}
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          #guarded: array:1 [
            0 => "*"
          ]
        }
        7 => App\Models\Task {#1300
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
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          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
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            "id" => 1376810
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            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1167"
            "field_display_title" => "1167"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1301
              #items: array:1 [
                0 => App\Models\Term {#1097 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1327
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1326
              #items: array:1 [
                0 => App\Models\Branch {#1181 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1325
              #items: array:2 [
                0 => App\Models\Branch {#1181 …30}
                1 => App\Models\Branch {#1186 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1324
              #items: array:7 [
                0 => App\Models\Element {#1352 …30}
                1 => App\Models\Element {#1362 …30}
                2 => App\Models\Element {#1356 …30}
                3 => App\Models\Element {#1354 …30}
                4 => App\Models\Element {#1360 …30}
                5 => App\Models\Element {#1358 …30}
                6 => App\Models\Element {#1364 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376811"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376809"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1350
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
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              "type" => "book_page"
            ]
          ]
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            "id" => 1376810
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "229"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1167"
            "field_display_title" => "1167"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1301}
            "field_metatags_title" => null
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            "field_h1" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1327}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1326}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1325}
            "content" => Illuminate\Database\Eloquent\Collection {#1324}
            "next" => array:2 [
              "refs" => "1376811"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376809"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1350}
            "page" => array:2 [
              "refs" => "1377435"
              "type" => "book_page"
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          ]
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          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        8 => App\Models\Task {#1322
          #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" => 1376811
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "229"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1168"
            "field_display_title" => "1168"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1323
              #items: array:1 [
                0 => App\Models\Term {#1097 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
            "field_description_top" => null
            "field_description_bottom" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1349
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1348
              #items: array:1 [
                0 => App\Models\Branch {#1181 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1347
              #items: array:2 [
                0 => App\Models\Branch {#1181 …30}
                1 => App\Models\Branch {#1186 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1346
              #items: array:7 [
                0 => App\Models\Element {#1374 …30}
                1 => App\Models\Element {#1384 …30}
                2 => App\Models\Element {#1376 …30}
                3 => App\Models\Element {#1378 …30}
                4 => App\Models\Element {#1382 …30}
                5 => App\Models\Element {#1380 …30}
                6 => App\Models\Element {#1386 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376812"
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            ]
            "previous" => array:2 [
              "refs" => "1376810"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1372
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377435"
              "type" => "book_page"
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            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1168"
            "field_display_title" => "1168"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1323}
            "field_metatags_title" => null
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            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1348}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1347}
            "content" => Illuminate\Database\Eloquent\Collection {#1346}
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            "previous" => array:2 [
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            "book" => Illuminate\Database\Eloquent\Collection {#1372}
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        9 => App\Models\Task {#1344
          #connection: "mysql"
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                0 => App\Models\Term {#1097 …30}
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            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1370
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                0 => App\Models\Branch {#1181 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1369
              #items: array:2 [
                0 => App\Models\Branch {#1181 …30}
                1 => App\Models\Branch {#1186 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1368
              #items: array:7 [
                0 => App\Models\Element {#1396 …30}
                1 => App\Models\Element {#1406 …30}
                2 => App\Models\Element {#1400 …30}
                3 => App\Models\Element {#1398 …30}
                4 => App\Models\Element {#1404 …30}
                5 => App\Models\Element {#1402 …30}
                6 => App\Models\Element {#1408 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376813"
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            ]
            "previous" => array:2 [
              "refs" => "1376811"
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            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1394
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
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              "type" => "book_page"
            ]
          ]
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            "created_at" => "2026-04-10 13:58:26"
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            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1169"
            "field_display_title" => "1169"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1345}
            "field_metatags_title" => null
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            "field_h1" => null
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            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1371}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1370}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1369}
            "content" => Illuminate\Database\Eloquent\Collection {#1368}
            "next" => array:2 [
              "refs" => "1376813"
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            "previous" => array:2 [
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            "book" => Illuminate\Database\Eloquent\Collection {#1394}
            "page" => array:2 [
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            0 => "*"
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        }
        10 => App\Models\Task {#1366
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
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            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1367
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                0 => App\Models\Term {#1097 …30}
              ]
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            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1392
              #items: array:1 [
                0 => App\Models\Branch {#1181 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1391
              #items: array:2 [
                0 => App\Models\Branch {#1181 …30}
                1 => App\Models\Branch {#1186 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1390
              #items: array:7 [
                0 => App\Models\Element {#1418 …30}
                1 => App\Models\Element {#1428 …30}
                2 => App\Models\Element {#1422 …30}
                3 => App\Models\Element {#1420 …30}
                4 => App\Models\Element {#1426 …30}
                5 => App\Models\Element {#1424 …30}
                6 => App\Models\Element {#1430 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376814"
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            ]
            "previous" => array:2 [
              "refs" => "1376812"
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            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1416
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
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              "refs" => "1377435"
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            ]
          ]
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            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1170"
            "field_display_title" => "1170"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1367}
            "field_metatags_title" => null
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            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1393}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1392}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1391}
            "content" => Illuminate\Database\Eloquent\Collection {#1390}
            "next" => array:2 [
              "refs" => "1376814"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376812"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1416}
            "page" => array:2 [
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      ]
      #escapeWhenCastingToString: false
    }
  ]
  #original: array:21 [
    "id" => 1377435
    "created_at" => "2026-04-10 13:58:26"
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    "field_url" => "/7-klass/algebra/merzlyak-uchebnik/page-229"
    "field_display_title" => "229"
    "field_folder" => "1"
    "field_image_name" => "229"
    "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#1036}
    "field_weight" => "0"
    "field_book_parent" => Illuminate\Database\Eloquent\Collection {#1067}
    "field_metatags_title" => null
    "field_metatags_description" => null
    "field_h1" => null
    "field_description_top" => null
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    "edition_groups" => Illuminate\Database\Eloquent\Collection {#1065}
    "content" => Illuminate\Database\Eloquent\Collection {#1076}
    "next" => array:2 [
      "refs" => "1377436"
      "type" => "book_page"
    ]
    "previous" => array:2 [
      "refs" => "1377434"
      "type" => "book_page"
    ]
    "tasks" => Illuminate\Database\Eloquent\Collection {#1066}
  ]
  #changes: []
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  #classCastCache: []
  #attributeCastCache: []
  #dateFormat: null
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  #dispatchesEvents: []
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  #touches: []
  +timestamps: true
  +usesUniqueIds: false
  #hidden: []
  #visible: []
  #fillable: []
  #guarded: array:1 [
    0 => "*"
  ]
}
Алгебра, 7 класс Учебник, авторы: Мерзляк Аркадий Григорьевич, Полонский Виталий Борисович, Якир Михаил Семёнович, издательство Просвещение, Москва, 2016 - 2022, страница 229
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