Номер 53, страница 22 - гдз по алгебре 9 класс учебник Солтан, Солтан

Алгебра, 9 класс Учебник, авторы: Солтан Генадий Николаевич, Солтан Алла Евгеньевна, Жумадилова Аманбала Жумадиловна, издательство Кокшетау, Алматы, 2019

Авторы: Солтан Г. Н., Солтан А. Е., Жумадилова А. Ж.

Тип: Учебник

Издательство: Кокшетау

Год издания: 2019 - 2026

ISBN: 978-601-317-424-2

Рекомендовано Министерством образования и науки Республики Казахстан

I. Уравнения, неравенства с двумя переменными и их системы. 1. Нелинейные уравнения с двумя переменными - номер 53, страница 22.

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                              "field_genitive_case" => "алгебры"
                              "field_nominative_case" => "алгебра"
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                            "field_subject_type" => "technical_subject"
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                          #dispatchesEvents: []
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                          #hidden: []
                          #visible: []
                          #fillable: []
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                      ]
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                    }
                    "field_class" => Illuminate\Database\Eloquent\Collection {#1117
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                        0 => App\Models\Term {#1118
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
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                          #withCount: []
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                          #attributes: array:6 [
                            "id" => 5458
                            "created_at" => "2026-04-10 13:58:26"
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                        0 => App\Models\Term {#1120
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                          #table: "terms"
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                            "created_at" => "2026-04-10 13:58:26"
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                            ]
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                          ]
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                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
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                        0 => App\Models\Term {#1122
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                          #table: "terms"
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                            "created_at" => "2026-04-10 13:58:26"
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                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Генадий"
                            "field_patronymic" => "Николаевич"
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                            "created_at" => "2026-04-10 13:58:26"
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                            "field_name" => "Генадий"
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                        }
                        1 => App\Models\Term {#1123
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
                          +preventsLazyLoading: false
                          #perPage: 15
                          +exists: true
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                          #escapeWhenCastingToString: false
                          #attributes: array:12 [
                            "id" => 7004
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
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                            "field_foreign_lang_patronymic" => null
                            "field_foreign_lang_surname" => null
                            "field_name" => "Алла"
                            "field_patronymic" => "Евгеньевна"
                            "field_surname_rp" => null
                          ]
                          #original: array:12 [
                            "id" => 7004
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
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                            "field_foreign_lang_patronymic" => null
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                            "field_name" => "Алла"
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                            "field_surname_rp" => null
                          ]
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                          #dateFormat: null
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                          #hidden: []
                          #visible: []
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                          #guarded: array:1 [
                            0 => "*"
                          ]
                        }
                        2 => App\Models\Term {#1124
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
                          #keyType: "int"
                          +incrementing: false
                          #with: []
                          #withCount: []
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                          #perPage: 15
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                          #attributes: array:12 [
                            "id" => 7005
                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
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                            "field_foreign_lang_patronymic" => null
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                            "field_name" => "Аманбала"
                            "field_patronymic" => "Жумадиловна"
                            "field_surname_rp" => null
                          ]
                          #original: array:12 [
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                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
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                            "field_name" => "Аманбала"
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                            "field_surname_rp" => null
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                      #items: []
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                    }
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                        0 => App\Models\Term {#1127
                          #connection: "mysql"
                          #table: "terms"
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                          #attributes: array:10 [
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                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
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                              "field_nominative_case" => "учебник"
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                            "field_plural_form" => null
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                            "field_translit" => "uchebnik"
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                            "created_at" => "2026-04-10 13:58:26"
                            "updated_at" => null
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                            "field_plural_form" => null
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                            "field_translit" => "uchebnik"
                          ]
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                      ]
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                    "field_country" => Illuminate\Database\Eloquent\Collection {#1128
                      #items: array:1 [
                        0 => App\Models\Term {#1129
                          #connection: "mysql"
                          #table: "terms"
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                            "field_translit" => "kazakhstan"
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                    "field_city" => Illuminate\Database\Eloquent\Collection {#1130
                      #items: array:1 [
                        0 => App\Models\Term {#1131
                          #connection: "mysql"
                          #table: "terms"
                          #primaryKey: "id"
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                      #escapeWhenCastingToString: false
                    }
                    "field_umk" => Illuminate\Database\Eloquent\Collection {#1133
                      #items: []
                      #escapeWhenCastingToString: false
                    }
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                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_standart_of_education" => Illuminate\Database\Eloquent\Collection {#1135
                      #items: []
                      #escapeWhenCastingToString: false
                    }
                    "field_publication_number" => null
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                      #items: []
                      #escapeWhenCastingToString: false
                    }
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                    ]
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                    ]
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                    ]
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                    }
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                    }
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                    }
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            "text" => "<p>Линейным уравнением с двумя переменными $x$ и $y$ называется уравнение вида $ax + by = c$, где $a$, $b$ и $c$ — некоторые числа (коэффициенты), причем $a$ и $b$ не равны нулю одновременно. Ключевым признаком является то, что переменные $x$ и $y$ входят в уравнение только в первой степени и не перемножаются друг с другом.</p><p>Проанализируем каждое уравнение:</p><p><strong>а)</strong> Уравнение $xy = 12$ содержит произведение переменных $x$ и $y$. Степень этого члена равна $1+1=2$. Такое уравнение не может быть приведено к стандартному виду $ax + by = c$. Следовательно, оно не является линейным.</p><p><strong>Ответ:</strong> не является линейным уравнением.</p><p><strong>б)</strong> Уравнение $x + y = √6$ соответствует стандартному виду $ax + by = c$, где коэффициенты $a=1$, $b=1$ и $c=√6$. Переменные $x$ и $y$ находятся в первой степени. Следовательно, это линейное уравнение.</p><p><strong>Ответ:</strong> является линейным уравнением.</p><p><strong>в)</strong> Учитывая, что $√k² = |k|$, данное уравнение можно переписать в виде $|x| + |y| = 4$. Наличие модулей у переменных $x$ и $y$ делает это уравнение нелинейным. Графиком этого уравнения является квадрат, а не прямая линия.</p><p><strong>Ответ:</strong> не является линейным уравнением.</p><p><strong>г)</strong> Раскроем скобки в уравнении $(x - 2)(y + 3) = 0$: $xy + 3x - 2y - 6 = 0$. Поскольку в уравнении присутствует член $xy$ (произведение переменных), оно не является линейным.</p><p><strong>Ответ:</strong> не является линейным уравнением.</p><p><strong>д)</strong> Уравнение $√2 ⋅ x - √3 ⋅ y = 0$ уже представлено в виде $ax + by = c$, где $a = √2$, $b = -√3$ и $c = 0$. Переменные $x$ и $y$ находятся в первой степени. Это линейное уравнение.</p><p><strong>Ответ:</strong> является линейным уравнением.</p><p><strong>е)</strong> Упростим левую часть уравнения, используя формулу разности квадратов $x² - y² = (x - y)(x + y)$. Это возможно при условии, что $x - y ≠ 0$, то есть $x ≠ y$.$\frac{(x - y)(x + y)}{x - y} = \frac{4}{9}$.После сокращения дроби на $(x - y)$ получаем уравнение $x + y = \frac{4}{9}$.Это уравнение имеет стандартный вид $ax + by = c$ ($a=1$, $b=1$, $c = \frac{4}{9}$). Несмотря на исходный вид и область определения, после алгебраического упрощения оно приводится к линейному виду, поэтому его относят к линейным уравнениям.</p><p><strong>Ответ:</strong> является линейным уравнением.</p><p>Таким образом, линейными уравнениями с двумя переменными из представленных являются уравнения <strong>б)</strong>, <strong>д)</strong> и <strong>е)</strong>.</p>"
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            "text" => "<p>Линейным уравнением с двумя переменными $x$ и $y$ называется уравнение вида $ax + by = c$, где $a$, $b$ и $c$ — некоторые числа (коэффициенты), причем $a$ и $b$ не равны нулю одновременно. Ключевым признаком является то, что переменные $x$ и $y$ входят в уравнение только в первой степени и не перемножаются друг с другом.</p><p>Проанализируем каждое уравнение:</p><p><strong>а)</strong> Уравнение $xy = 12$ содержит произведение переменных $x$ и $y$. Степень этого члена равна $1+1=2$. Такое уравнение не может быть приведено к стандартному виду $ax + by = c$. Следовательно, оно не является линейным.</p><p><strong>Ответ:</strong> не является линейным уравнением.</p><p><strong>б)</strong> Уравнение $x + y = √6$ соответствует стандартному виду $ax + by = c$, где коэффициенты $a=1$, $b=1$ и $c=√6$. Переменные $x$ и $y$ находятся в первой степени. Следовательно, это линейное уравнение.</p><p><strong>Ответ:</strong> является линейным уравнением.</p><p><strong>в)</strong> Учитывая, что $√k² = |k|$, данное уравнение можно переписать в виде $|x| + |y| = 4$. Наличие модулей у переменных $x$ и $y$ делает это уравнение нелинейным. Графиком этого уравнения является квадрат, а не прямая линия.</p><p><strong>Ответ:</strong> не является линейным уравнением.</p><p><strong>г)</strong> Раскроем скобки в уравнении $(x - 2)(y + 3) = 0$: $xy + 3x - 2y - 6 = 0$. Поскольку в уравнении присутствует член $xy$ (произведение переменных), оно не является линейным.</p><p><strong>Ответ:</strong> не является линейным уравнением.</p><p><strong>д)</strong> Уравнение $√2 ⋅ x - √3 ⋅ y = 0$ уже представлено в виде $ax + by = c$, где $a = √2$, $b = -√3$ и $c = 0$. Переменные $x$ и $y$ находятся в первой степени. Это линейное уравнение.</p><p><strong>Ответ:</strong> является линейным уравнением.</p><p><strong>е)</strong> Упростим левую часть уравнения, используя формулу разности квадратов $x² - y² = (x - y)(x + y)$. Это возможно при условии, что $x - y ≠ 0$, то есть $x ≠ y$.$\frac{(x - y)(x + y)}{x - y} = \frac{4}{9}$.После сокращения дроби на $(x - y)$ получаем уравнение $x + y = \frac{4}{9}$.Это уравнение имеет стандартный вид $ax + by = c$ ($a=1$, $b=1$, $c = \frac{4}{9}$). Несмотря на исходный вид и область определения, после алгебраического упрощения оно приводится к линейному виду, поэтому его относят к линейным уравнениям.</p><p><strong>Ответ:</strong> является линейным уравнением.</p><p>Таким образом, линейными уравнениями с двумя переменными из представленных являются уравнения <strong>б)</strong>, <strong>д)</strong> и <strong>е)</strong>.</p>"
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№53 (с. 22)
Условие. №53 (с. 22)
скриншот условия
Алгебра, 9 класс Учебник, авторы: Солтан Генадий Николаевич, Солтан Алла Евгеньевна, Жумадилова Аманбала Жумадиловна, издательство Кокшетау, Алматы, 2019, страница 22, номер 53, Условие

53. Какие из уравнений являются линейными уравнениями с двумя переменными:

а) $xy = 12;$

б) $x + y = \sqrt{6};$

в) $\sqrt{x^2} + \sqrt{y^2} = 4;$

г) $(x - 2)(y + 3) = 0;$

д) $\sqrt{2} \cdot x - \sqrt{3} \cdot y = 0;$

е) $\frac{x^2 - y^2}{x - y} = \frac{4}{9}?$

Решение. №53 (с. 22)
Алгебра, 9 класс Учебник, авторы: Солтан Генадий Николаевич, Солтан Алла Евгеньевна, Жумадилова Аманбала Жумадиловна, издательство Кокшетау, Алматы, 2019, страница 22, номер 53, Решение
Решение 2 (rus). №53 (с. 22)

Линейным уравнением с двумя переменными $x$ и $y$ называется уравнение вида $ax + by = c$, где $a$, $b$ и $c$ — некоторые числа (коэффициенты), причем $a$ и $b$ не равны нулю одновременно. Ключевым признаком является то, что переменные $x$ и $y$ входят в уравнение только в первой степени и не перемножаются друг с другом.

Проанализируем каждое уравнение:

а) Уравнение $xy = 12$ содержит произведение переменных $x$ и $y$. Степень этого члена равна $1+1=2$. Такое уравнение не может быть приведено к стандартному виду $ax + by = c$. Следовательно, оно не является линейным.

Ответ: не является линейным уравнением.

б) Уравнение $x + y = √6$ соответствует стандартному виду $ax + by = c$, где коэффициенты $a=1$, $b=1$ и $c=√6$. Переменные $x$ и $y$ находятся в первой степени. Следовательно, это линейное уравнение.

Ответ: является линейным уравнением.

в) Учитывая, что $√k² = |k|$, данное уравнение можно переписать в виде $|x| + |y| = 4$. Наличие модулей у переменных $x$ и $y$ делает это уравнение нелинейным. Графиком этого уравнения является квадрат, а не прямая линия.

Ответ: не является линейным уравнением.

г) Раскроем скобки в уравнении $(x - 2)(y + 3) = 0$: $xy + 3x - 2y - 6 = 0$. Поскольку в уравнении присутствует член $xy$ (произведение переменных), оно не является линейным.

Ответ: не является линейным уравнением.

д) Уравнение $√2 ⋅ x - √3 ⋅ y = 0$ уже представлено в виде $ax + by = c$, где $a = √2$, $b = -√3$ и $c = 0$. Переменные $x$ и $y$ находятся в первой степени. Это линейное уравнение.

Ответ: является линейным уравнением.

е) Упростим левую часть уравнения, используя формулу разности квадратов $x² - y² = (x - y)(x + y)$. Это возможно при условии, что $x - y ≠ 0$, то есть $x ≠ y$.$\frac{(x - y)(x + y)}{x - y} = \frac{4}{9}$.После сокращения дроби на $(x - y)$ получаем уравнение $x + y = \frac{4}{9}$.Это уравнение имеет стандартный вид $ax + by = c$ ($a=1$, $b=1$, $c = \frac{4}{9}$). Несмотря на исходный вид и область определения, после алгебраического упрощения оно приводится к линейному виду, поэтому его относят к линейным уравнениям.

Ответ: является линейным уравнением.

Таким образом, линейными уравнениями с двумя переменными из представленных являются уравнения б), д) и е).

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