Страница 210 - 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 210

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          #attributes: array:21 [
            "id" => 1377413
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
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            "field_display_title" => "211"
            "field_folder" => "1"
            "field_image_name" => "211"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#4633
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#4662
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
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            "field_h1" => null
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            "edition_groups" => Illuminate\Database\Eloquent\Collection {#4661
              #items: []
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#4650
              #items: array:1 [
                0 => App\Models\Element {#4652
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
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                  #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" => "1377414"
              "type" => "book_page"
            ]
            "previous" => array:2 [
              "refs" => "1377412"
              "type" => "book_page"
            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#4658
              #items: array:8 [
                0 => App\Models\Task {#4638
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
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                  +exists: true
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                  #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]
                }
                1 => App\Models\Task {#4635
                  #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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                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                2 => App\Models\Task {#4723
                  #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]
                }
                3 => App\Models\Task {#4695
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
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                  #attributes: array:24 [ …24]
                  #original: array:24 [ …24]
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                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
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                  #touches: []
                  +timestamps: true
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                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                4 => App\Models\Task {#4669
                  #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: []
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                5 => App\Models\Task {#4620
                  #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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                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
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                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                6 => App\Models\Task {#4588
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
                  #withCount: []
                  +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
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                7 => App\Models\Task {#4748
                  #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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                  #dateFormat: null
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                  #touches: []
                  +timestamps: true
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                  #hidden: []
                  #visible: []
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                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:21 [
            "id" => 1377413
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            "field_display_title" => "211"
            "field_folder" => "1"
            "field_image_name" => "211"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#4633}
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#4662}
            "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 {#4661}
            "content" => Illuminate\Database\Eloquent\Collection {#4650}
            "next" => array:2 [
              "refs" => "1377414"
              "type" => "book_page"
            ]
            "previous" => array:2 [
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            ]
            "tasks" => Illuminate\Database\Eloquent\Collection {#4658}
          ]
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            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
    "previous" => Illuminate\Database\Eloquent\Collection {#4580
      #items: array:1 [
        0 => App\Models\BookPage {#4579
          #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" => 1377410
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
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            "field_display_title" => "209"
            "field_folder" => "1"
            "field_image_name" => "209"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#4581
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#4582
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
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            "field_h1" => null
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            "edition_groups" => Illuminate\Database\Eloquent\Collection {#4583
              #items: []
              #escapeWhenCastingToString: false
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            "content" => Illuminate\Database\Eloquent\Collection {#4593
              #items: array:1 [
                0 => App\Models\Element {#4592
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
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                  #attributes: array:6 [ …6]
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                }
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
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            ]
            "previous" => array:2 [
              "refs" => "1377409"
              "type" => "book_page"
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            "tasks" => Illuminate\Database\Eloquent\Collection {#4727
              #items: array:3 [
                0 => App\Models\Task {#4737
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
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                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Task {#4743
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
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                  #guarded: array:1 [ …1]
                }
                2 => App\Models\Task {#4749
                  #connection: "mysql"
                  #table: "tasks"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
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                  #original: array:24 [ …24]
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                  #hidden: []
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                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
          ]
          #original: array:21 [
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            "field_display_title" => "209"
            "field_folder" => "1"
            "field_image_name" => "209"
            "field_branch_parent" => Illuminate\Database\Eloquent\Collection {#4581}
            "field_weight" => "0"
            "field_book_parent" => Illuminate\Database\Eloquent\Collection {#4582}
            "field_metatags_title" => null
            "field_metatags_description" => null
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            "field_description_bottom" => null
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#4583}
            "content" => Illuminate\Database\Eloquent\Collection {#4593}
            "next" => array:2 [
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              "type" => "book_page"
            ]
            "previous" => array:2 [
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            "tasks" => Illuminate\Database\Eloquent\Collection {#4727}
          ]
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            0 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
    "tasks" => Illuminate\Database\Eloquent\Collection {#1066
      #items: array:7 [
        0 => App\Models\Task {#1092
          #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" => 1376680
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
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            "field_page_end" => "210"
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1049"
            "field_display_title" => "1049"
            "field_outside_task" => "0"
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1096
              #items: array:1 [
                0 => App\Models\Term {#1093
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
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                  +exists: true
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                  #attributes: array:6 [ …6]
                  #original: array:6 [ …6]
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                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_metatags_title" => null
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            "field_match" => null
            "breadcrumbs" => []
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              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1133
              #items: array:1 [
                0 => App\Models\Branch {#1094
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
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                }
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1169
              #items: array:2 [
                0 => App\Models\Branch {#1177
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
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                }
                1 => App\Models\Branch {#1182
                  #connection: "mysql"
                  #table: "branches"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: true
                  #with: []
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                }
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1166
              #items: array:7 [
                0 => App\Models\Element {#1155
                  #connection: "mysql"
                  #table: "elements"
                  #primaryKey: "id"
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                  +incrementing: true
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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 {#1191
                  #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 {#1147
                  #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 {#1154
                  #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 {#1170
                  #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 {#1137
                  #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 {#1199
                  #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]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376681"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376679"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1157
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377410"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1376680
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "209"
            "field_page_end" => "210"
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1049"
            "field_display_title" => "1049"
            "field_outside_task" => "0"
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1096}
            "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 {#1095}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1133}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1169}
            "content" => Illuminate\Database\Eloquent\Collection {#1166}
            "next" => array:2 [
              "refs" => "1376681"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376679"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1157}
            "page" => array:2 [
              "refs" => "1377410"
              "type" => "book_page"
            ]
          ]
          #changes: []
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          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
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          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        1 => App\Models\Task {#1131
          #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" => 1376681
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "210"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1050"
            "field_display_title" => "1050"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1174
              #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 {#1159
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1158
              #items: array:1 [
                0 => App\Models\Branch {#1177}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1160
              #items: array:2 [
                0 => App\Models\Branch {#1177}
                1 => App\Models\Branch {#1182}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1161
              #items: array:7 [
                0 => App\Models\Element {#1216
                  #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 {#1226
                  #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 {#1220
                  #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
                   …4
                }
                3 => App\Models\Element {#1218 …30}
                4 => App\Models\Element {#1224 …30}
                5 => App\Models\Element {#1222 …30}
                6 => App\Models\Element {#1228 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376682"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376680"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1214
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377412"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1376681
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "210"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1050"
            "field_display_title" => "1050"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1174}
            "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 {#1159}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1158}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1160}
            "content" => Illuminate\Database\Eloquent\Collection {#1161}
            "next" => array:2 [
              "refs" => "1376682"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376680"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1214}
            "page" => array:2 [
              "refs" => "1377412"
              "type" => "book_page"
            ]
          ]
          #changes: []
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          #classCastCache: []
          #attributeCastCache: []
          #dateFormat: null
          #appends: []
          #dispatchesEvents: []
          #observables: []
          #relations: []
          #touches: []
          +timestamps: true
          +usesUniqueIds: false
          #hidden: []
          #visible: []
          #fillable: []
          #guarded: array:1 [
            0 => "*"
          ]
        }
        2 => App\Models\Task {#1163
          #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" => 1376682
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "210"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1051"
            "field_display_title" => "1051"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1162
              #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 {#1213
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1212
              #items: array:1 [
                0 => App\Models\Branch {#1177}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1211
              #items: array:2 [
                0 => App\Models\Branch {#1177}
                1 => App\Models\Branch {#1182}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1210
              #items: array:7 [
                0 => App\Models\Element {#1238 …30}
                1 => App\Models\Element {#1248 …30}
                2 => App\Models\Element {#1242 …30}
                3 => App\Models\Element {#1240 …30}
                4 => App\Models\Element {#1246 …30}
                5 => App\Models\Element {#1244 …30}
                6 => App\Models\Element {#1250 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376683"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376681"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1236
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377412"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1376682
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "210"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1051"
            "field_display_title" => "1051"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1162}
            "field_metatags_title" => null
            "field_metatags_description" => null
            "field_h1" => null
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1213}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1212}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1211}
            "content" => Illuminate\Database\Eloquent\Collection {#1210}
            "next" => array:2 [
              "refs" => "1376683"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376681"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1236}
            "page" => array:2 [
              "refs" => "1377412"
              "type" => "book_page"
            ]
          ]
          #changes: []
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          #visible: []
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          #guarded: array:1 [
            0 => "*"
          ]
        }
        3 => App\Models\Task {#1207
          #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" => 1376683
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "210"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1052"
            "field_display_title" => "1052"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1208
              #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
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            "breadcrumbs" => []
            "edition_groups" => Illuminate\Database\Eloquent\Collection {#1235
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1234
              #items: array:1 [
                0 => App\Models\Branch {#1177}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1233
              #items: array:2 [
                0 => App\Models\Branch {#1177}
                1 => App\Models\Branch {#1182}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1232
              #items: array:7 [
                0 => App\Models\Element {#1260 …30}
                1 => App\Models\Element {#1270 …30}
                2 => App\Models\Element {#1264 …30}
                3 => App\Models\Element {#1262 …30}
                4 => App\Models\Element {#1268 …30}
                5 => App\Models\Element {#1266 …30}
                6 => App\Models\Element {#1272 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376684"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376682"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1258
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377412"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1376683
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "210"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1052"
            "field_display_title" => "1052"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1208}
            "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 {#1235}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1234}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1233}
            "content" => Illuminate\Database\Eloquent\Collection {#1232}
            "next" => array:2 [
              "refs" => "1376684"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376682"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1258}
            "page" => array:2 [
              "refs" => "1377412"
              "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 => "*"
          ]
        }
        4 => App\Models\Task {#1230
          #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" => 1376684
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "210"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1053"
            "field_display_title" => "1053"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1231
              #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 {#1257
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1256
              #items: array:1 [
                0 => App\Models\Branch {#1177}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1255
              #items: array:2 [
                0 => App\Models\Branch {#1177}
                1 => App\Models\Branch {#1182}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1254
              #items: array:7 [
                0 => App\Models\Element {#1282 …30}
                1 => App\Models\Element {#1292 …30}
                2 => App\Models\Element {#1286 …30}
                3 => App\Models\Element {#1284 …30}
                4 => App\Models\Element {#1290 …30}
                5 => App\Models\Element {#1288 …30}
                6 => App\Models\Element {#1294 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376685"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376683"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1280
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377412"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1376684
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "210"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1053"
            "field_display_title" => "1053"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1231}
            "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 {#1257}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1256}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1255}
            "content" => Illuminate\Database\Eloquent\Collection {#1254}
            "next" => array:2 [
              "refs" => "1376685"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376683"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1280}
            "page" => array:2 [
              "refs" => "1377412"
              "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 {#1252
          #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" => 1376685
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "210"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1054"
            "field_display_title" => "1054"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1253
              #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 {#1279
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1278
              #items: array:1 [
                0 => App\Models\Branch {#1177}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1277
              #items: array:2 [
                0 => App\Models\Branch {#1177}
                1 => App\Models\Branch {#1182}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1276
              #items: array:7 [
                0 => App\Models\Element {#1304 …30}
                1 => App\Models\Element {#1314 …30}
                2 => App\Models\Element {#1308 …30}
                3 => App\Models\Element {#1306 …30}
                4 => App\Models\Element {#1312 …30}
                5 => App\Models\Element {#1310 …30}
                6 => App\Models\Element {#1316 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376686"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376684"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1302
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377412"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1376685
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "210"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1054"
            "field_display_title" => "1054"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1253}
            "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 {#1279}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1278}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1277}
            "content" => Illuminate\Database\Eloquent\Collection {#1276}
            "next" => array:2 [
              "refs" => "1376686"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376684"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1302}
            "page" => array:2 [
              "refs" => "1377412"
              "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 {#1274
          #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" => 1376686
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "210"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1055"
            "field_display_title" => "1055"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1275
              #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 {#1301
              #items: []
              #escapeWhenCastingToString: false
            }
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1300
              #items: array:1 [
                0 => App\Models\Branch {#1177}
              ]
              #escapeWhenCastingToString: false
            }
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1299
              #items: array:2 [
                0 => App\Models\Branch {#1177}
                1 => App\Models\Branch {#1182}
              ]
              #escapeWhenCastingToString: false
            }
            "content" => Illuminate\Database\Eloquent\Collection {#1298
              #items: array:7 [
                0 => App\Models\Element {#1326 …30}
                1 => App\Models\Element {#1336 …30}
                2 => App\Models\Element {#1330 …30}
                3 => App\Models\Element {#1328 …30}
                4 => App\Models\Element {#1334 …30}
                5 => App\Models\Element {#1332 …30}
                6 => App\Models\Element {#1338 …30}
              ]
              #escapeWhenCastingToString: false
            }
            "next" => array:2 [
              "refs" => "1376687"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376685"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1324
              #items: array:1 [
                0 => App\Models\Book {#1034}
              ]
              #escapeWhenCastingToString: false
            }
            "page" => array:2 [
              "refs" => "1377412"
              "type" => "book_page"
            ]
          ]
          #original: array:24 [
            "id" => 1376686
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_page_start" => "210"
            "field_page_end" => null
            "field_url" => "/7-klass/algebra/merzlyak-uchebnik/1055"
            "field_display_title" => "1055"
            "field_outside_task" => null
            "field_task_type" => Illuminate\Database\Eloquent\Collection {#1275}
            "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 {#1301}
            "top_parent_branch" => Illuminate\Database\Eloquent\Collection {#1300}
            "parent_branches" => Illuminate\Database\Eloquent\Collection {#1299}
            "content" => Illuminate\Database\Eloquent\Collection {#1298}
            "next" => array:2 [
              "refs" => "1376687"
              "type" => "task"
            ]
            "previous" => array:2 [
              "refs" => "1376685"
              "type" => "task"
            ]
            "book" => Illuminate\Database\Eloquent\Collection {#1324}
            "page" => array:2 [
              "refs" => "1377412"
              "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 => "*"
          ]
        }
      ]
      #escapeWhenCastingToString: false
    }
  ]
  #original: array:21 [
    "id" => 1377412
    "created_at" => "2026-04-10 13:58:26"
    "updated_at" => null
    "field_page_start" => "210"
    "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 {#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" => "1377413"
      "type" => "book_page"
    ]
    "previous" => array:2 [
      "refs" => "1377410"
      "type" => "book_page"
    ]
    "tasks" => Illuminate\Database\Eloquent\Collection {#1066}
  ]
  #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 210
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