Страница 171 - 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 171

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          #escapeWhenCastingToString: false
          #attributes: array:21 [
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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/page-172"
            "field_display_title" => "172"
            "field_folder" => "1"
            "field_image_name" => "172"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#4604
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#4603
              #items: array:1 [
                0 => App\Models\Book {#1036}
              ]
              #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 {#4602
              #items: []
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#4752
              #items: array:1 [
                0 => App\Models\Element {#4751
                  #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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                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
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                  #relations: []
                  #touches: []
                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1377365"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "1377362"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#4918
              #items: array:7 [
                0 => App\Models\Task {#4932
                  #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
                  #appends: []
                  #dispatchesEvents: []
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                  #touches: []
                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Task {#4939
                  #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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                  #dispatchesEvents: []
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                2 => App\Models\Task {#4945
                  #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
                  #appends: []
                  #dispatchesEvents: []
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                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                3 => App\Models\Task {#4951
                  #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
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                4 => App\Models\Task {#4973
                  #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 {#4995
                  #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 {#5017
                  #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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                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:21 [
            "id" => 1377363
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
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            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/page-172"
            "field_display_title" => "172"
            "field_folder" => "1"
            "field_image_name" => "172"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#4604}
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#4603}
            "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 {#4602}
            "content" => Illuminate\Database\Eloquent\Collection {#4752}
            "next" => array:2 [
              "refs" => "1377365"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "1377362"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#4918}
          ]
          #changes: []
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          #dateFormat: null
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            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
    "previous" => Illuminate\Database\Eloquent\Collection {#4583
      #items: array:1 [
        0 => App\Models\BookPage {#4582
          #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" => 1377361
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "170"
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/page-170"
            "field_display_title" => "170"
            "field_folder" => "1"
            "field_image_name" => "170"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#4584
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#4585
              #items: array:1 [
                0 => App\Models\Book {#1036}
              ]
              #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 {#4586
              #items: []
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#4596
              #items: array:1 [
                0 => App\Models\Element {#4595
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #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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                  #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" => "1377362"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "1377360"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#4589
              #items: array:8 [
                0 => App\Models\Task {#4607
                  #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]
                }
                1 => App\Models\Task {#4613
                  #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
                  #appends: []
                  #dispatchesEvents: []
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                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                2 => App\Models\Task {#4619
                  #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]
                }
                3 => App\Models\Task {#4641
                  #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 {#4663
                  #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 {#4685
                  #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 {#4707
                  #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 {#4729
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:24 [ …24]
                  #original: array:24 [ …24]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:21 [
            "id" => 1377361
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "170"
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/page-170"
            "field_display_title" => "170"
            "field_folder" => "1"
            "field_image_name" => "170"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#4584}
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#4585}
            "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 {#4586}
            "content" => Illuminate\Database\Eloquent\Collection {#4596}
            "next" => array:2 [
              "refs" => "1377362"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "1377360"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#4589}
          ]
          #changes: []
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          #attributeCastCache: []
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          #hidden: []
          #visible: []
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          #guarded: array:1 [
            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
    "tasks" => Illuminate\Database\Eloquent\Collection {#1068
      #items: array:7 [
        0 => App\Models\Task {#1094
          #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" => 1376489
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "171"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/886"
            "field_display_title" => "886"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1098
              #items: array:1 [
                0 => App\Models\Term {#1095
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:6 [ …6]
                  #original: array:6 [ …6]
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                  #guarded: array:1 [ …1]
                }
              ]
              #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 {#1135
              #items: array:1 [
                0 => App\Models\Branch {#1096
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:24 [ …24]
                  #original: array:24 [ …24]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1171
              #items: array:2 [
                0 => App\Models\Branch {#1179
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:24 [ …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]
                }
                1 => App\Models\Branch {#1184
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:24 [ …24]
                  #original: array:24 [ …24]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1168
              #items: array:7 [
                0 => App\Models\Element {#1157
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:7 [ …7]
                  #original: array:7 [ …7]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Element {#1193
                  #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 {#1149
                  #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 {#1156
                  #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 {#1172
                  #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 {#1139
                  #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: []
                   …8
                }
                6 => App\Models\Element {#1201 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376490"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376488"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1159
              #items: array:1 [
                0 => App\Models\Book {#1036}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377362"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1376489
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "171"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/886"
            "field_display_title" => "886"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1098}
            "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 {#1097}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1135}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1171}
            "content" => Illuminate\Database\Eloquent\Collection {#1168}
            "next" => array:2 [
              "refs" => "1376490"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376488"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1159}
            "page" => array:2 [
              "refs" => "1377362"
              "type" => "book_page"
            ]
          ]
          #changes: []
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          #attributeCastCache: []
          #dateFormat: null
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          #dispatchesEvents: []
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          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        1 => App\Models\Task {#1133
          #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" => 1376490
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "171"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/887"
            "field_display_title" => "887"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1176
              #items: array:1 [
                0 => App\Models\Term {#1095}
              ]
              #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 {#1161
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1160
              #items: array:1 [
                0 => App\Models\Branch {#1179}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1162
              #items: array:2 [
                0 => App\Models\Branch {#1179}
                1 => App\Models\Branch {#1184}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1163
              #items: array:7 [
                0 => App\Models\Element {#1218 …30}
                1 => App\Models\Element {#1228 …30}
                2 => App\Models\Element {#1222 …30}
                3 => App\Models\Element {#1220 …30}
                4 => App\Models\Element {#1226 …30}
                5 => App\Models\Element {#1224 …30}
                6 => App\Models\Element {#1230 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376491"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376489"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1216
              #items: array:1 [
                0 => App\Models\Book {#1036}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377362"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1376490
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "171"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/887"
            "field_display_title" => "887"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1176}
            "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 {#1161}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1160}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1162}
            "content" => Illuminate\Database\Eloquent\Collection {#1163}
            "next" => array:2 [
              "refs" => "1376491"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376489"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1216}
            "page" => array:2 [
              "refs" => "1377362"
              "type" => "book_page"
            ]
          ]
          #changes: []
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          #dateFormat: null
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          #touches: []
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          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        2 => App\Models\Task {#1165
          #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" => 1376491
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "171"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/888"
            "field_display_title" => "888"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1164
              #items: array:1 [
                0 => App\Models\Term {#1095}
              ]
              #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 {#1215
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1214
              #items: array:1 [
                0 => App\Models\Branch {#1179}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1213
              #items: array:2 [
                0 => App\Models\Branch {#1179}
                1 => App\Models\Branch {#1184}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1212
              #items: array:7 [
                0 => App\Models\Element {#1240 …30}
                1 => App\Models\Element {#1250 …30}
                2 => App\Models\Element {#1244 …30}
                3 => App\Models\Element {#1242 …30}
                4 => App\Models\Element {#1248 …30}
                5 => App\Models\Element {#1246 …30}
                6 => App\Models\Element {#1252 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376492"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376490"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1238
              #items: array:1 [
                0 => App\Models\Book {#1036}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377362"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1376491
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "171"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/888"
            "field_display_title" => "888"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1164}
            "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 {#1215}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1214}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1213}
            "content" => Illuminate\Database\Eloquent\Collection {#1212}
            "next" => array:2 [
              "refs" => "1376492"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376490"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1238}
            "page" => array:2 [
              "refs" => "1377362"
              "type" => "book_page"
            ]
          ]
          #changes: []
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          #dateFormat: null
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          #touches: []
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          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        3 => App\Models\Task {#1209
          #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" => 1376492
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "171"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/889"
            "field_display_title" => "889"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1210
              #items: array:1 [
                0 => App\Models\Term {#1095}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "field_description_bottom" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1237
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1236
              #items: array:1 [
                0 => App\Models\Branch {#1179}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1235
              #items: array:2 [
                0 => App\Models\Branch {#1179}
                1 => App\Models\Branch {#1184}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1234
              #items: array:7 [
                0 => App\Models\Element {#1262 …30}
                1 => App\Models\Element {#1272 …30}
                2 => App\Models\Element {#1266 …30}
                3 => App\Models\Element {#1264 …30}
                4 => App\Models\Element {#1270 …30}
                5 => App\Models\Element {#1268 …30}
                6 => App\Models\Element {#1274 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376493"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376491"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1260
              #items: array:1 [
                0 => App\Models\Book {#1036}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377362"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1376492
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
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            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/889"
            "field_display_title" => "889"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1210}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1237}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1236}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1235}
            "content" => Illuminate\Database\Eloquent\Collection {#1234}
            "next" => array:2 [
              "refs" => "1376493"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376491"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1260}
            "page" => array:2 [
              "refs" => "1377362"
              "type" => "book_page"
            ]
          ]
          #changes: []
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          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        4 => App\Models\Task {#1232
          #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" => 1376493
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "171"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/890"
            "field_display_title" => "890"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1233
              #items: array:1 [
                0 => App\Models\Term {#1095}
              ]
              #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 {#1259
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1258
              #items: array:1 [
                0 => App\Models\Branch {#1179}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1257
              #items: array:2 [
                0 => App\Models\Branch {#1179}
                1 => App\Models\Branch {#1184}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1256
              #items: array:7 [
                0 => App\Models\Element {#1284 …30}
                1 => App\Models\Element {#1294 …30}
                2 => App\Models\Element {#1288 …30}
                3 => App\Models\Element {#1286 …30}
                4 => App\Models\Element {#1292 …30}
                5 => App\Models\Element {#1290 …30}
                6 => App\Models\Element {#1296 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376494"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376492"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1282
              #items: array:1 [
                0 => App\Models\Book {#1036}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377362"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1376493
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "171"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/890"
            "field_display_title" => "890"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1233}
            "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 {#1259}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1258}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1257}
            "content" => Illuminate\Database\Eloquent\Collection {#1256}
            "next" => array:2 [
              "refs" => "1376494"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376492"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1282}
            "page" => array:2 [
              "refs" => "1377362"
              "type" => "book_page"
            ]
          ]
          #changes: []
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          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
          #observables: []
          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        5 => App\Models\Task {#1254
          #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" => 1376494
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "171"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/891"
            "field_display_title" => "891"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1255
              #items: array:1 [
                0 => App\Models\Term {#1095}
              ]
              #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 {#1281
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1280
              #items: array:1 [
                0 => App\Models\Branch {#1179}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1279
              #items: array:2 [
                0 => App\Models\Branch {#1179}
                1 => App\Models\Branch {#1184}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1278
              #items: array:7 [
                0 => App\Models\Element {#1306 …30}
                1 => App\Models\Element {#1316 …30}
                2 => App\Models\Element {#1310 …30}
                3 => App\Models\Element {#1308 …30}
                4 => App\Models\Element {#1314 …30}
                5 => App\Models\Element {#1312 …30}
                6 => App\Models\Element {#1318 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376495"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376493"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1304
              #items: array:1 [
                0 => App\Models\Book {#1036}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377362"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1376494
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "171"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/891"
            "field_display_title" => "891"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1255}
            "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 {#1281}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1280}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1279}
            "content" => Illuminate\Database\Eloquent\Collection {#1278}
            "next" => array:2 [
              "refs" => "1376495"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376493"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1304}
            "page" => array:2 [
              "refs" => "1377362"
              "type" => "book_page"
            ]
          ]
          #changes: []
          #casts: []
          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
          #observables: []
          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        6 => App\Models\Task {#1276
          #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" => 1376495
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "171"
            "field_page_end" => "172"
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/892"
            "field_display_title" => "892"
            "field_outside_task" => "0"
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1277
              #items: array:1 [
                0 => App\Models\Term {#1095}
              ]
              #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 {#1303
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1302
              #items: array:1 [
                0 => App\Models\Branch {#1179}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1301
              #items: array:2 [
                0 => App\Models\Branch {#1179}
                1 => App\Models\Branch {#1184}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1300
              #items: array:7 [
                0 => App\Models\Element {#1328 …30}
                1 => App\Models\Element {#1338 …30}
                2 => App\Models\Element {#1332 …30}
                3 => App\Models\Element {#1330 …30}
                4 => App\Models\Element {#1336 …30}
                5 => App\Models\Element {#1334 …30}
                6 => App\Models\Element {#1340 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376496"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376494"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1326
              #items: array:1 [
                0 => App\Models\Book {#1036}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377362"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1376495
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "171"
            "field_page_end" => "172"
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/892"
            "field_display_title" => "892"
            "field_outside_task" => "0"
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1277}
            "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 {#1303}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1302}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1301}
            "content" => Illuminate\Database\Eloquent\Collection {#1300}
            "next" => array:2 [
              "refs" => "1376496"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376494"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1326}
            "page" => array:2 [
              "refs" => "1377362"
              "type" => "book_page"
            ]
          ]
          #changes: []
          #casts: []
          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
          #observables: []
          #relations: []
          #touches: []
          +timestamps: true
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          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
  ]
  #original: array:21 [
    "id" => 1377362
    "created_at" => "2026-04-10 13:58:26"
    "updated_at" => null
    "field_page_start" => "171"
    "field_url" => "/7-klass/algebra/merzlyak-uchebnik/page-171"
    "field_display_title" => "171"
    "field_folder" => "1"
    "field_image_name" => "171"
    "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#1038}
    "field_weight" => "0"
    "field_book_parent" => Illuminate\Database\Eloquent\Collection {#1069}
    "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 {#1067}
    "content" => Illuminate\Database\Eloquent\Collection {#1078}
    "next" => array:2 [
      "refs" => "1377363"
      "type" => "book_page"
    ]
    "previous" => array:2 [
      "refs" => "1377361"
      "type" => "book_page"
    ]
    "tasks" => Illuminate\Database\Eloquent\Collection {#1068}
  ]
  #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 171
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