Номер 329, страница 65 - 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

Глава 2. Целые выражения. §9. Сложение и вычитание многочленов - номер 329, страница 65.

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        3 => App\Models\Element {#1080
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        5 => App\Models\Element {#1118
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        6 => App\Models\Element {#1146
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            "text" => "<p>Чтобы доказать, что значение выражения $(6m + 8) - (3m - 4)$ кратно 3 при любом натуральном значении $m$, необходимо это выражение упростить.</p><p>1. Раскроем скобки. Поскольку перед второй скобкой стоит знак минус, знаки слагаемых внутри нее изменятся на противоположные:</p><p>$(6m + 8) - (3m - 4) = 6m + 8 - 3m + 4$</p><p>2. Приведем подобные слагаемые, сгруппировав члены с переменной $m$ и свободные члены:</p><p>$(6m - 3m) + (8 + 4) = 3m + 12$</p><p>3. Чтобы доказать кратность выражения числу 3, вынесем общий множитель 3 за скобки:</p><p>$3m + 12 = 3(m + 4)$</p><p>В полученном выражении $3(m + 4)$ один из множителей равен 3. По условию, $m$ — любое натуральное число (т.е. $m \in \{1, 2, 3, ...\}$), следовательно, выражение в скобках $(m + 4)$ всегда будет целым числом.</p><p>Произведение, в котором один из множителей делится на какое-либо число, само делится на это число. Так как один из множителей равен 3, то всё выражение $3(m + 4)$ делится на 3 без остатка при любом натуральном $m$.</p><p>Таким образом, утверждение доказано.</p><p>Ответ: Утверждение доказано.</p>"
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            "text" => "<p>Чтобы доказать, что значение выражения $(6m + 8) - (3m - 4)$ кратно 3 при любом натуральном значении $m$, необходимо это выражение упростить.</p><p>1. Раскроем скобки. Поскольку перед второй скобкой стоит знак минус, знаки слагаемых внутри нее изменятся на противоположные:</p><p>$(6m + 8) - (3m - 4) = 6m + 8 - 3m + 4$</p><p>2. Приведем подобные слагаемые, сгруппировав члены с переменной $m$ и свободные члены:</p><p>$(6m - 3m) + (8 + 4) = 3m + 12$</p><p>3. Чтобы доказать кратность выражения числу 3, вынесем общий множитель 3 за скобки:</p><p>$3m + 12 = 3(m + 4)$</p><p>В полученном выражении $3(m + 4)$ один из множителей равен 3. По условию, $m$ — любое натуральное число (т.е. $m \in \{1, 2, 3, ...\}$), следовательно, выражение в скобках $(m + 4)$ всегда будет целым числом.</p><p>Произведение, в котором один из множителей делится на какое-либо число, само делится на это число. Так как один из множителей равен 3, то всё выражение $3(m + 4)$ делится на 3 без остатка при любом натуральном $m$.</p><p>Таким образом, утверждение доказано.</p><p>Ответ: Утверждение доказано.</p>"
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№329 (с. 65)
Условие. №329 (с. 65)
скриншот условия
Алгебра, 7 класс Учебник, авторы: Мерзляк Аркадий Григорьевич, Полонский Виталий Борисович, Якир Михаил Семёнович, издательство Просвещение, Москва, 2016 - 2022, страница 65, номер 329, Условие

329. Докажите, что значение выражения $(6m + 8) - (3m - 4)$ кратно 3 при любом натуральном значении $m$.

Решение 1. №329 (с. 65)
Алгебра, 7 класс Учебник, авторы: Мерзляк Аркадий Григорьевич, Полонский Виталий Борисович, Якир Михаил Семёнович, издательство Просвещение, Москва, 2016 - 2022, страница 65, номер 329, Решение 1
Решение 2. №329 (с. 65)
Алгебра, 7 класс Учебник, авторы: Мерзляк Аркадий Григорьевич, Полонский Виталий Борисович, Якир Михаил Семёнович, издательство Просвещение, Москва, 2016 - 2022, страница 65, номер 329, Решение 2
Решение 3. №329 (с. 65)
Алгебра, 7 класс Учебник, авторы: Мерзляк Аркадий Григорьевич, Полонский Виталий Борисович, Якир Михаил Семёнович, издательство Просвещение, Москва, 2016 - 2022, страница 65, номер 329, Решение 3
Решение 4. №329 (с. 65)
Решение 5. №329 (с. 65)
Решение 6. №329 (с. 65)

Чтобы доказать, что значение выражения $(6m + 8) - (3m - 4)$ кратно 3 при любом натуральном значении $m$, необходимо это выражение упростить.

1. Раскроем скобки. Поскольку перед второй скобкой стоит знак минус, знаки слагаемых внутри нее изменятся на противоположные:

$(6m + 8) - (3m - 4) = 6m + 8 - 3m + 4$

2. Приведем подобные слагаемые, сгруппировав члены с переменной $m$ и свободные члены:

$(6m - 3m) + (8 + 4) = 3m + 12$

3. Чтобы доказать кратность выражения числу 3, вынесем общий множитель 3 за скобки:

$3m + 12 = 3(m + 4)$

В полученном выражении $3(m + 4)$ один из множителей равен 3. По условию, $m$ — любое натуральное число (т.е. $m \in \{1, 2, 3, ...\}$), следовательно, выражение в скобках $(m + 4)$ всегда будет целым числом.

Произведение, в котором один из множителей делится на какое-либо число, само делится на это число. Так как один из множителей равен 3, то всё выражение $3(m + 4)$ делится на 3 без остатка при любом натуральном $m$.

Таким образом, утверждение доказано.

Ответ: Утверждение доказано.

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