Номер 25, страница 97, часть 1 - гдз по алгебре 10 класс учебник Пак, Ардакулы

Алгебра, 10 класс Учебник, авторы: Пак Олег Владимирович, Ардакулы Дархан, Ескендирова Елена Викторовна, издательство Алматыкітап баспасы, Алматы, 2019

Авторы: Пак О. В., Ардакулы Д., Ескендирова Е. В.

Тип: Учебник

Издательство: Алматыкітап баспасы

Год издания: 2019 - 2026

Часть: 1

ISBN: 978-601-01-3958-9

Рекомендовано Министерством образования и науки Республики Казахстан

Часть 1. Глава 2. Тригонометрические функции. Параграф 2. Графики функций. 2.6. Примеры. Задачи - номер 25, страница 97.

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        3 => App\Models\Branch {#1200
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            "id" => 1119372
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_display_title" => "Задачи"
            "field_branch_order" => null
            "field_url" => null
            "field_branch_type" => Illuminate\Database\Eloquent\Collection {#1276}
            "field_page_start" => "93"
            "field_branch_display" => "0"
            "field_branch_expanded" => "0"
            "field_display_branch_in_title" => "1"
            "field_display_task_interval" => "0"
            "field_display_branch_page" => "1"
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            "field_branch_cover" => []
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            "book" => Illuminate\Database\Eloquent\Collection {#1277}
            "branch_parent" => Illuminate\Database\Eloquent\Collection {#1306}
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    "content" => Illuminate\Database\Eloquent\Collection {#1354
      #items: array:2 [
        0 => App\Models\Element {#1355
          #connection: "mysql"
          #table: "elements"
          #primaryKey: "id"
          #keyType: "int"
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          #attributes: array:7 [
            "id" => 1300426
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1356
              #items: array:1 [
                0 => App\Models\Edition {#1357
                  #connection: "mysql"
                  #table: "editions"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
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                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:21 [ …21]
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            "task" => array:2 [
              "refs" => "1119743"
              "type" => "task"
            ]
            "text" => "<p><strong>25. (3)</strong> В условии указан вид функции $f(x)$ и множество ее значений. Найдите значения параметров $p$ и $q$, если:</p><p><strong>а)</strong> $f(x)=p\sin(2x+\frac{\pi}{3})+q$, $E(f):[-10;20]$;</p><p><strong>б)</strong> $f(x)=p|\cos x|+q$, $E(f):[4;12]$.</p>"
            "img" => array:1 [
              0 => array:5 [
                "name" => "25-1.jpg"
                "alt" => null
                "width" => "1669"
                "height" => 312
                "path" => "/media/algebra_10/baspasy-u19/0-2-2-6zad/25-1.webp?ts=1753534571"
              ]
            ]
          ]
          #original: array:7 [
            "id" => 1300426
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1356}
            "task" => array:2 [
              "refs" => "1119743"
              "type" => "task"
            ]
            "text" => "<p><strong>25. (3)</strong> В условии указан вид функции $f(x)$ и множество ее значений. Найдите значения параметров $p$ и $q$, если:</p><p><strong>а)</strong> $f(x)=p\sin(2x+\frac{\pi}{3})+q$, $E(f):[-10;20]$;</p><p><strong>б)</strong> $f(x)=p|\cos x|+q$, $E(f):[4;12]$.</p>"
            "img" => array:1 [
              0 => array:5 [
                "name" => "25-1.jpg"
                "alt" => null
                "width" => "1669"
                "height" => 312
                "path" => "/media/algebra_10/baspasy-u19/0-2-2-6zad/25-1.webp?ts=1753534571"
              ]
            ]
          ]
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          #hidden: []
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          #guarded: array:1 [
            0 => "*"
          ]
        }
        1 => App\Models\Element {#1363
          #connection: "mysql"
          #table: "elements"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: true
          #with: []
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          #perPage: 15
          +exists: true
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          #escapeWhenCastingToString: false
          #attributes: array:6 [
            "id" => 1551462
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1364
              #items: array:1 [
                0 => App\Models\Edition {#1365
                  #connection: "mysql"
                  #table: "editions"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:21 [ …21]
                  #original: array:21 [ …21]
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                }
              ]
              #escapeWhenCastingToString: false
            }
            "task" => array:2 [
              "refs" => "1119743"
              "type" => "task"
            ]
            "text" => "<p><strong>а)</strong></p><p>Область значений функции синус, $y = \sin(\alpha)$, — это отрезок $[-1; 1]$. Таким образом, для любого $x$ выполняется неравенство: $-1 \le \sin(2x+\frac{\pi}{3}) \le 1$.</p><p>При умножении на параметр $p$, выражение $p \sin(2x+\frac{\pi}{3})$ будет принимать значения в диапазоне от $-|p|$ до $|p|$. После вертикального сдвига на $q$, вся функция $f(x)$ принимает значения в диапазоне от $-|p|+q$ до $|p|+q$.</p><p>Следовательно, область значений $E(f)$ — это отрезок $[-|p|+q; |p|+q]$.</p><p>Согласно условию, $E(f) = [-10; 20]$. Приравнивая концы отрезков, получаем систему уравнений:</p><p>$\begin{cases} -|p| + q = -10 \\ |p| + q = 20 \end{cases}$</p><p>Сложим два уравнения: $(-|p|+q) + (|p|+q) = -10+20$, что дает $2q=10$, откуда $q=5$.</p><p>Подставим значение $q=5$ во второе уравнение: $|p|+5 = 20$, откуда $|p|=15$.</p><p>Таким образом, возможные значения для $p$ — это $15$ и $-15$.</p><p><strong>Ответ:</strong> $q=5$, $p=15$ или $p=-15$.</p><p><strong>б)</strong></p><p>Область значений функции $y = |\cos x|$ — это отрезок $[0; 1]$. То есть, $0 \le |\cos x| \le 1$.</p><p>Рассмотрим два возможных случая для знака параметра $p$.</p><p><strong>Случай 1: $p > 0$.</strong></p><p>При умножении на положительное число $p$, неравенство сохраняется: $0 \le p|\cos x| \le p$. После сдвига на $q$, область значений функции $f(x)$ становится $[q; p+q]$.</p><p>Сопоставляя с заданной областью значений $E(f) = [4; 12]$, получаем систему: $\begin{cases} q=4 \\ p+q=12 \end{cases}$.</p><p>Из системы находим $p=12-4=8$. Поскольку $p=8>0$, данная пара значений $(p=8, q=4)$ является решением.</p><p><strong>Случай 2: $p < 0$.</strong></p><p>При умножении на отрицательное число $p$, знаки неравенства меняются: $p \le p|\cos x| \le 0$. После сдвига на $q$, область значений функции $f(x)$ становится $[p+q; q]$.</p><p>Сопоставляя с заданной областью значений $E(f) = [4; 12]$, получаем систему: $\begin{cases} p+q=4 \\ q=12 \end{cases}$.</p><p>Из системы находим $p=4-12=-8$. Поскольку $p=-8<0$, данная пара значений $(p=-8, q=12)$ также является решением.</p><p><strong>Ответ:</strong> $p=8, q=4$ или $p=-8, q=12$.</p>"
          ]
          #original: array:6 [
            "id" => 1551462
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "edition" => Illuminate\Database\Eloquent\Collection {#1364}
            "task" => array:2 [
              "refs" => "1119743"
              "type" => "task"
            ]
            "text" => "<p><strong>а)</strong></p><p>Область значений функции синус, $y = \sin(\alpha)$, — это отрезок $[-1; 1]$. Таким образом, для любого $x$ выполняется неравенство: $-1 \le \sin(2x+\frac{\pi}{3}) \le 1$.</p><p>При умножении на параметр $p$, выражение $p \sin(2x+\frac{\pi}{3})$ будет принимать значения в диапазоне от $-|p|$ до $|p|$. После вертикального сдвига на $q$, вся функция $f(x)$ принимает значения в диапазоне от $-|p|+q$ до $|p|+q$.</p><p>Следовательно, область значений $E(f)$ — это отрезок $[-|p|+q; |p|+q]$.</p><p>Согласно условию, $E(f) = [-10; 20]$. Приравнивая концы отрезков, получаем систему уравнений:</p><p>$\begin{cases} -|p| + q = -10 \\ |p| + q = 20 \end{cases}$</p><p>Сложим два уравнения: $(-|p|+q) + (|p|+q) = -10+20$, что дает $2q=10$, откуда $q=5$.</p><p>Подставим значение $q=5$ во второе уравнение: $|p|+5 = 20$, откуда $|p|=15$.</p><p>Таким образом, возможные значения для $p$ — это $15$ и $-15$.</p><p><strong>Ответ:</strong> $q=5$, $p=15$ или $p=-15$.</p><p><strong>б)</strong></p><p>Область значений функции $y = |\cos x|$ — это отрезок $[0; 1]$. То есть, $0 \le |\cos x| \le 1$.</p><p>Рассмотрим два возможных случая для знака параметра $p$.</p><p><strong>Случай 1: $p > 0$.</strong></p><p>При умножении на положительное число $p$, неравенство сохраняется: $0 \le p|\cos x| \le p$. После сдвига на $q$, область значений функции $f(x)$ становится $[q; p+q]$.</p><p>Сопоставляя с заданной областью значений $E(f) = [4; 12]$, получаем систему: $\begin{cases} q=4 \\ p+q=12 \end{cases}$.</p><p>Из системы находим $p=12-4=8$. Поскольку $p=8>0$, данная пара значений $(p=8, q=4)$ является решением.</p><p><strong>Случай 2: $p < 0$.</strong></p><p>При умножении на отрицательное число $p$, знаки неравенства меняются: $p \le p|\cos x| \le 0$. После сдвига на $q$, область значений функции $f(x)$ становится $[p+q; q]$.</p><p>Сопоставляя с заданной областью значений $E(f) = [4; 12]$, получаем систему: $\begin{cases} p+q=4 \\ q=12 \end{cases}$.</p><p>Из системы находим $p=4-12=-8$. Поскольку $p=-8<0$, данная пара значений $(p=-8, q=12)$ также является решением.</p><p><strong>Ответ:</strong> $p=8, q=4$ или $p=-8, q=12$.</p>"
          ]
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    "book" => Illuminate\Database\Eloquent\Collection {#1371
      #items: array:1 [
        0 => App\Models\Book {#1372
          #connection: "mysql"
          #table: "books"
          #primaryKey: "id"
          #keyType: "int"
          +incrementing: false
          #with: []
          #withCount: []
          +preventsLazyLoading: false
          #perPage: 15
          +exists: true
          +wasRecentlyCreated: false
          #escapeWhenCastingToString: false
          #attributes: array:50 [
            "id" => 4295
            "created_at" => "2026-04-10 13:58:26"
            "updated_at" => null
            "field_tree_default_status" => "tasks"
            "field_pages_status" => null
            "field_subject" => Illuminate\Database\Eloquent\Collection {#1373
              #items: array:1 [
                0 => App\Models\Term {#1374
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:10 [ …10]
                  #original: array:10 [ …10]
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                  #attributeCastCache: []
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                  #touches: []
                  +timestamps: true
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                  #hidden: []
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                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_class" => Illuminate\Database\Eloquent\Collection {#1375
              #items: array:1 [
                0 => App\Models\Term {#1376
                  #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]
                  #changes: []
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                  #attributeCastCache: []
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
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                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_publisher" => Illuminate\Database\Eloquent\Collection {#1377
              #items: array:1 [
                0 => App\Models\Term {#1378
                  #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]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_author" => Illuminate\Database\Eloquent\Collection {#1379
              #items: array:3 [
                0 => App\Models\Term {#1380
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:12 [ …12]
                  #original: array:12 [ …12]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
                  #observables: []
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                1 => App\Models\Term {#1381
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:12 [ …12]
                  #original: array:12 [ …12]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
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                  #relations: []
                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
                2 => App\Models\Term {#1382
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:12 [ …12]
                  #original: array:12 [ …12]
                  #changes: []
                  #casts: []
                  #classCastCache: []
                  #attributeCastCache: []
                  #dateFormat: null
                  #appends: []
                  #dispatchesEvents: []
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_author_foreign" => Illuminate\Database\Eloquent\Collection {#1383
              #items: []
              #escapeWhenCastingToString: false
            }
            "field_book_type" => Illuminate\Database\Eloquent\Collection {#1384
              #items: array:1 [
                0 => App\Models\Term {#1385
                  #connection: "mysql"
                  #table: "terms"
                  #primaryKey: "id"
                  #keyType: "int"
                  +incrementing: false
                  #with: []
                  #withCount: []
                  +preventsLazyLoading: false
                  #perPage: 15
                  +exists: true
                  +wasRecentlyCreated: false
                  #escapeWhenCastingToString: false
                  #attributes: array:10 [ …10]
                  #original: array:10 [ …10]
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
            "field_country" => Illuminate\Database\Eloquent\Collection {#1386
              #items: array:1 [
                0 => App\Models\Term {#1387
                  #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]
                  #changes: []
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                  #attributeCastCache: []
                  #dateFormat: null
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                  #touches: []
                  +timestamps: true
                  +usesUniqueIds: false
                  #hidden: []
                  #visible: []
                  #fillable: []
                  #guarded: array:1 [ …1]
                }
              ]
              #escapeWhenCastingToString: false
            }
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№25 (с. 97)
Условие. №25 (с. 97)
скриншот условия
Алгебра, 10 класс Учебник, авторы: Пак Олег Владимирович, Ардакулы Дархан, Ескендирова Елена Викторовна, издательство Алматыкітап баспасы, Алматы, 2019, Часть 1, страница 97, номер 25, Условие

25. (3) В условии указан вид функции $f(x)$ и множество ее значений. Найдите значения параметров $p$ и $q$, если:

а) $f(x)=p\sin(2x+\frac{\pi}{3})+q$, $E(f):[-10;20]$;

б) $f(x)=p|\cos x|+q$, $E(f):[4;12]$.

Решение 2 (rus). №25 (с. 97)

а)

Область значений функции синус, $y = \sin(\alpha)$, — это отрезок $[-1; 1]$. Таким образом, для любого $x$ выполняется неравенство: $-1 \le \sin(2x+\frac{\pi}{3}) \le 1$.

При умножении на параметр $p$, выражение $p \sin(2x+\frac{\pi}{3})$ будет принимать значения в диапазоне от $-|p|$ до $|p|$. После вертикального сдвига на $q$, вся функция $f(x)$ принимает значения в диапазоне от $-|p|+q$ до $|p|+q$.

Следовательно, область значений $E(f)$ — это отрезок $[-|p|+q; |p|+q]$.

Согласно условию, $E(f) = [-10; 20]$. Приравнивая концы отрезков, получаем систему уравнений:

$\begin{cases} -|p| + q = -10 \\ |p| + q = 20 \end{cases}$

Сложим два уравнения: $(-|p|+q) + (|p|+q) = -10+20$, что дает $2q=10$, откуда $q=5$.

Подставим значение $q=5$ во второе уравнение: $|p|+5 = 20$, откуда $|p|=15$.

Таким образом, возможные значения для $p$ — это $15$ и $-15$.

Ответ: $q=5$, $p=15$ или $p=-15$.

б)

Область значений функции $y = |\cos x|$ — это отрезок $[0; 1]$. То есть, $0 \le |\cos x| \le 1$.

Рассмотрим два возможных случая для знака параметра $p$.

Случай 1: $p > 0$.

При умножении на положительное число $p$, неравенство сохраняется: $0 \le p|\cos x| \le p$. После сдвига на $q$, область значений функции $f(x)$ становится $[q; p+q]$.

Сопоставляя с заданной областью значений $E(f) = [4; 12]$, получаем систему: $\begin{cases} q=4 \\ p+q=12 \end{cases}$.

Из системы находим $p=12-4=8$. Поскольку $p=8>0$, данная пара значений $(p=8, q=4)$ является решением.

Случай 2: $p < 0$.

При умножении на отрицательное число $p$, знаки неравенства меняются: $p \le p|\cos x| \le 0$. После сдвига на $q$, область значений функции $f(x)$ становится $[p+q; q]$.

Сопоставляя с заданной областью значений $E(f) = [4; 12]$, получаем систему: $\begin{cases} p+q=4 \\ q=12 \end{cases}$.

Из системы находим $p=4-12=-8$. Поскольку $p=-8<0$, данная пара значений $(p=-8, q=12)$ также является решением.

Ответ: $p=8, q=4$ или $p=-8, q=12$.

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