Страница 211 - 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 211

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          #escapeWhenCastingToString: false
          #attributes: array:21 [
            "id" => 1377414
            "created_at" => "2026-04-10 13:58:26"
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            "field_display_title" => "212"
            "field_folder" => "1"
            "field_image_name" => "212"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#4608
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#4607
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
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            "field_metatags_title" => null
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            "field_h1" => null
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            "edition_groups" => Illuminate\Database\Eloquent\Collection {#4606
              #items: []
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#4760
              #items: array:1 [
                0 => App\Models\Element {#4734
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
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                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:6 [ …6]
                  #original: array:6 [ …6]
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #touches: []
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                  #hidden: []
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                }
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1377415"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "1377413"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#4871
              #items: array:4 [
                0 => App\Models\Task {#4881
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
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                  +exists: true
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                  #escapeWhenCastingToString: false
                  #attributes: array:24 [ …24]
                  #original: array:24 [ …24]
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #touches: []
                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Task {#4888
                  #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]
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                  #attributeCastCache: []
                  #dateFormat: null
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                  +timestamps: true
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                  #hidden: []
                  #visible: []
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                  #guarded: array:1 [ …1]
                }
                2 => App\Models\Task {#4894
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
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                  +preventsLazyLoading: false
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                  +exists: true
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                  #attributes: array:24 [ …24]
                  #original: array:24 [ …24]
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                  #attributeCastCache: []
                  #dateFormat: null
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                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                3 => App\Models\Task {#4900
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
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                  +preventsLazyLoading: false
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                  #escapeWhenCastingToString: false
                  #attributes: array:24 [ …24]
                  #original: array:24 [ …24]
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                  #dateFormat: null
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                  +timestamps: true
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                  #hidden: []
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                }
              ]
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:21 [
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            "field_display_title" => "212"
            "field_folder" => "1"
            "field_image_name" => "212"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#4608}
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#4607}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "field_description_bottom" => null
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#4606}
            "content" => Illuminate\Database\Eloquent\Collection {#4760}
            "next" => array:2 [
              "refs" => "1377415"
              "type" => "book_page"
            ]
            "previous" => array:2 [
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              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#4871}
          ]
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            0 => "*"
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      ]
      #escapeWhenCastingToString: false
    }
    "previous" => Illuminate\Database\Eloquent\Collection {#4588
      #items: array:1 [
        0 => App\Models\BookPage {#4587
          #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" => 1377412
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
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            "field_display_title" => "210"
            "field_folder" => "1"
            "field_image_name" => "210"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#4589
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#4590
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #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 {#4591
              #items: []
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#4601
              #items: array:1 [
                0 => App\Models\Element {#4600
                  #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]
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                  #dateFormat: null
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                  #touches: []
                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1377413"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "1377410"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#4592
              #items: array:7 [
                0 => App\Models\Task {#4611
                  #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]
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Task {#4617
                  #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]
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                  #attributeCastCache: []
                  #dateFormat: null
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                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                2 => App\Models\Task {#4623
                  #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 [ …24]
                  #original: array:24 [ …24]
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                3 => App\Models\Task {#4645
                  #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]
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                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                4 => App\Models\Task {#4667
                  #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]
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                  #attributeCastCache: []
                  #dateFormat: null
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                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                5 => App\Models\Task {#4689
                  #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
                  #appends: []
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                6 => App\Models\Task {#4711
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
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                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:24 [ …24]
                  #original: array:24 [ …24]
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #touches: []
                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:21 [
            "id" => 1377412
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
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            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/page-210"
            "field_display_title" => "210"
            "field_folder" => "1"
            "field_image_name" => "210"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#4589}
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#4590}
            "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 {#4591}
            "content" => Illuminate\Database\Eloquent\Collection {#4601}
            "next" => array:2 [
              "refs" => "1377413"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "1377410"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#4592}
          ]
          #changes: []
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            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
    "tasks" => Illuminate\Database\Eloquent\Collection {#1069
      #items: array:8 [
        0 => App\Models\Task {#1095
          #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" => 1376687
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "211"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1056"
            "field_display_title" => "1056"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1099
              #items: array:1 [
                0 => App\Models\Term {#1093
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
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                  #escapeWhenCastingToString: false
                  #attributes: array:6 [ …6]
                  #original: array:6 [ …6]
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                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "field_description_bottom" => null
            "field_match" => null
            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1097
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1108
              #items: array:1 [
                0 => App\Models\Branch {#1107
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
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                  #escapeWhenCastingToString: false
                  #attributes: array:24 [ …24]
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                }
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1143
              #items: array:2 [
                0 => App\Models\Branch {#1151
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
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                  +preventsLazyLoading: false
                  #perPage: 15
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                  #attributes: array:24 [ …24]
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                  #hidden: []
                  #visible: []
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                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Branch {#1155
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
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                  #escapeWhenCastingToString: false
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                  #hidden: []
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                }
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1140
              #items: array:7 [
                0 => App\Models\Element {#1129
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
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                  #perPage: 15
                  +exists: true
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                  #escapeWhenCastingToString: false
                  #attributes: array:7 [ …7]
                  #original: array:7 [ …7]
                  #changes: []
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                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Element {#1118
                  #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: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                2 => App\Models\Element {#1126
                  #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: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                3 => App\Models\Element {#1128
                  #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: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                4 => App\Models\Element {#1123
                  #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: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                5 => App\Models\Element {#1125
                  #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: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                6 => App\Models\Element {#1122 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376688"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376686"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1131
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377413"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1376687
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "211"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1056"
            "field_display_title" => "1056"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1099}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1097}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1108}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1143}
            "content" => Illuminate\Database\Eloquent\Collection {#1140}
            "next" => array:2 [
              "refs" => "1376688"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376686"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1131}
            "page" => array:2 [
              "refs" => "1377413"
              "type" => "book_page"
            ]
          ]
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          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        1 => App\Models\Task {#1100
          #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" => 1376688
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "211"
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            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1057"
            "field_display_title" => "1057"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1148
              #items: array:1 [
                0 => App\Models\Term {#1093}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1133
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1132
              #items: array:1 [
                0 => App\Models\Branch {#1151}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1134
              #items: array:2 [
                0 => App\Models\Branch {#1151}
                1 => App\Models\Branch {#1155}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1135
              #items: array:7 [
                0 => App\Models\Element {#1200 …30}
                1 => App\Models\Element {#1212 …30}
                2 => App\Models\Element {#1205 …30}
                3 => App\Models\Element {#1201 …30}
                4 => App\Models\Element {#1210 …30}
                5 => App\Models\Element {#1208 …30}
                6 => App\Models\Element {#1214 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376689"
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            ]
            "previous" => array:2 [
              "refs" => "1376687"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1177
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377413"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
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            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1057"
            "field_display_title" => "1057"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1148}
            "field_metatags_title" => null
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            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1133}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1132}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1134}
            "content" => Illuminate\Database\Eloquent\Collection {#1135}
            "next" => array:2 [
              "refs" => "1376689"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376687"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1177}
            "page" => array:2 [
              "refs" => "1377413"
              "type" => "book_page"
            ]
          ]
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            0 => "*"
          ]
        }
        2 => App\Models\Task {#1137
          #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" => 1376689
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "211"
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            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1058"
            "field_display_title" => "1058"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1136
              #items: array:1 [
                0 => App\Models\Term {#1093}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1187
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1124
              #items: array:1 [
                0 => App\Models\Branch {#1151}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1164
              #items: array:2 [
                0 => App\Models\Branch {#1151}
                1 => App\Models\Branch {#1155}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1113
              #items: array:7 [
                0 => App\Models\Element {#1224 …30}
                1 => App\Models\Element {#1234 …30}
                2 => App\Models\Element {#1228 …30}
                3 => App\Models\Element {#1226 …30}
                4 => App\Models\Element {#1232 …30}
                5 => App\Models\Element {#1230 …30}
                6 => App\Models\Element {#1236 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376690"
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            "previous" => array:2 [
              "refs" => "1376688"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1222
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377413"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
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            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
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            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1058"
            "field_display_title" => "1058"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1136}
            "field_metatags_title" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1187}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1124}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1164}
            "content" => Illuminate\Database\Eloquent\Collection {#1113}
            "next" => array:2 [
              "refs" => "1376690"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376688"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1222}
            "page" => array:2 [
              "refs" => "1377413"
              "type" => "book_page"
            ]
          ]
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            0 => "*"
          ]
        }
        3 => App\Models\Task {#1121
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
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          #attributes: array:24 [
            "id" => 1376690
            "created_at" => "2026-04-10 13:58:26"
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            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1059"
            "field_display_title" => "1059"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1144
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                0 => App\Models\Term {#1093}
              ]
              #escapeWhenCastingToString: false
            }
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            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1221
              #items: []
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            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1220
              #items: array:1 [
                0 => App\Models\Branch {#1151}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1219
              #items: array:2 [
                0 => App\Models\Branch {#1151}
                1 => App\Models\Branch {#1155}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1218
              #items: array:7 [
                0 => App\Models\Element {#1246 …30}
                1 => App\Models\Element {#1256 …30}
                2 => App\Models\Element {#1250 …30}
                3 => App\Models\Element {#1248 …30}
                4 => App\Models\Element {#1254 …30}
                5 => App\Models\Element {#1252 …30}
                6 => App\Models\Element {#1258 …30}
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            "book" => Illuminate\Database\Eloquent\Collection {#1244
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
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            "field_display_title" => "1059"
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            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1144}
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            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1220}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1219}
            "content" => Illuminate\Database\Eloquent\Collection {#1218}
            "next" => array:2 [
              "refs" => "1376691"
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            "previous" => array:2 [
              "refs" => "1376689"
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            "book" => Illuminate\Database\Eloquent\Collection {#1244}
            "page" => array:2 [
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            0 => "*"
          ]
        }
        4 => App\Models\Task {#1216
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
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          #attributes: array:24 [
            "id" => 1376691
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
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            "field_display_title" => "1060"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1217
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                0 => App\Models\Term {#1093}
              ]
              #escapeWhenCastingToString: false
            }
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              #items: []
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            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1242
              #items: array:1 [
                0 => App\Models\Branch {#1151}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1241
              #items: array:2 [
                0 => App\Models\Branch {#1151}
                1 => App\Models\Branch {#1155}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1240
              #items: array:7 [
                0 => App\Models\Element {#1268 …30}
                1 => App\Models\Element {#1278 …30}
                2 => App\Models\Element {#1272 …30}
                3 => App\Models\Element {#1270 …30}
                4 => App\Models\Element {#1276 …30}
                5 => App\Models\Element {#1274 …30}
                6 => App\Models\Element {#1280 …30}
              ]
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            }
            "next" => array:2 [
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            ]
            "previous" => array:2 [
              "refs" => "1376690"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1266
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377413"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1376691
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "211"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1060"
            "field_display_title" => "1060"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1217}
            "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 {#1243}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1242}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1241}
            "content" => Illuminate\Database\Eloquent\Collection {#1240}
            "next" => array:2 [
              "refs" => "1376692"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376690"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1266}
            "page" => array:2 [
              "refs" => "1377413"
              "type" => "book_page"
            ]
          ]
          #changes: []
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          #attributeCastCache: []
          #dateFormat: null
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          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        5 => App\Models\Task {#1238
          #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" => 1376692
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "211"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1061"
            "field_display_title" => "1061"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1239
              #items: array:1 [
                0 => App\Models\Term {#1093}
              ]
              #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 {#1265
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1264
              #items: array:1 [
                0 => App\Models\Branch {#1151}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1263
              #items: array:2 [
                0 => App\Models\Branch {#1151}
                1 => App\Models\Branch {#1155}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1262
              #items: array:7 [
                0 => App\Models\Element {#1290 …30}
                1 => App\Models\Element {#1300 …30}
                2 => App\Models\Element {#1294 …30}
                3 => App\Models\Element {#1292 …30}
                4 => App\Models\Element {#1298 …30}
                5 => App\Models\Element {#1296 …30}
                6 => App\Models\Element {#1302 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376693"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376691"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1288
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377413"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
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            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "211"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1061"
            "field_display_title" => "1061"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1239}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1265}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1264}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1263}
            "content" => Illuminate\Database\Eloquent\Collection {#1262}
            "next" => array:2 [
              "refs" => "1376693"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376691"
              "type" => "task"
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            "book" => Illuminate\Database\Eloquent\Collection {#1288}
            "page" => array:2 [
              "refs" => "1377413"
              "type" => "book_page"
            ]
          ]
          #changes: []
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          #hidden: []
          #visible: []
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            0 => "*"
          ]
        }
        6 => App\Models\Task {#1260
          #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" => 1376693
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            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1062"
            "field_display_title" => "1062"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1261
              #items: array:1 [
                0 => App\Models\Term {#1093}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
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            "field_h1" => null
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            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1287
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1286
              #items: array:1 [
                0 => App\Models\Branch {#1151}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1285
              #items: array:2 [
                0 => App\Models\Branch {#1151}
                1 => App\Models\Branch {#1155}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1284
              #items: array:7 [
                0 => App\Models\Element {#1312 …30}
                1 => App\Models\Element {#1322 …30}
                2 => App\Models\Element {#1316 …30}
                3 => App\Models\Element {#1314 …30}
                4 => App\Models\Element {#1320 …30}
                5 => App\Models\Element {#1318 …30}
                6 => App\Models\Element {#1324 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376694"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376692"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1310
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377413"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1376693
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "211"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1062"
            "field_display_title" => "1062"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1261}
            "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 {#1287}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1286}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1285}
            "content" => Illuminate\Database\Eloquent\Collection {#1284}
            "next" => array:2 [
              "refs" => "1376694"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376692"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1310}
            "page" => array:2 [
              "refs" => "1377413"
              "type" => "book_page"
            ]
          ]
          #changes: []
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            0 => "*"
          ]
        }
        7 => App\Models\Task {#1282
          #connection: "mysql"
          #table: "tasks"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
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            "field_display_title" => "1063"
            "field_outside_task" => "0"
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1283
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                0 => App\Models\Term {#1093}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
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            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1309
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1308
              #items: array:1 [
                0 => App\Models\Branch {#1151}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1307
              #items: array:2 [
                0 => App\Models\Branch {#1151}
                1 => App\Models\Branch {#1155}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1306
              #items: array:7 [
                0 => App\Models\Element {#1334 …30}
                1 => App\Models\Element {#1344 …30}
                2 => App\Models\Element {#1338 …30}
                3 => App\Models\Element {#1336 …30}
                4 => App\Models\Element {#1342 …30}
                5 => App\Models\Element {#1340 …30}
                6 => App\Models\Element {#1346 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376695"
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            ]
            "previous" => array:2 [
              "refs" => "1376693"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1332
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377413"
              "type" => "book_page"
            ]
          ]
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            "updated_at" => null
            "field_page_start" => "211"
            "field_page_end" => "212"
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1063"
            "field_display_title" => "1063"
            "field_outside_task" => "0"
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1283}
            "field_metatags_title" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1309}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1308}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1307}
            "content" => Illuminate\Database\Eloquent\Collection {#1306}
            "next" => array:2 [
              "refs" => "1376695"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376693"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1332}
            "page" => array:2 [
              "refs" => "1377413"
              "type" => "book_page"
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          ]
          #changes: []
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            0 => "*"
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        }
      ]
      #escapeWhenCastingToString: false
    }
  ]
  #original: array:21 [
    "id" => 1377413
    "created_at" => "2026-04-10 13:58:26"
    "updated_at" => null
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    "field_url" => "/7-klass/algebra/merzlyak-uchebnik/page-211"
    "field_display_title" => "211"
    "field_folder" => "1"
    "field_image_name" => "211"
    "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
    "field_description_bottom" => null
    "edition_groups" => Illuminate\Database\Eloquent\Collection {#1065}
    "content" => Illuminate\Database\Eloquent\Collection {#1076}
    "next" => array:2 [
      "refs" => "1377414"
      "type" => "book_page"
    ]
    "previous" => array:2 [
      "refs" => "1377412"
      "type" => "book_page"
    ]
    "tasks" => Illuminate\Database\Eloquent\Collection {#1069}
  ]
  #changes: []
  #casts: []
  #classCastCache: []
  #attributeCastCache: []
  #dateFormat: null
  #appends: []
  #dispatchesEvents: []
  #observables: []
  #relations: []
  #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 211
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