Предмет: Алгебра, автор: va5ilievaalina704

Возведите двучлен в куб
1. (5a+b)³=?
2. (2x-7y)³=?

Ответы

Автор ответа: Аноним
4

Ответ:

1. (5а+b)³=125а³+75а²b+15ab²+b³

2. (2x-7y)³=8x³-84x²y+294+343y³

Объяснение:

используем формулу (а-b)³=a³-3a²b+3ab²-b³ и (а+b)³=a³+3a²b+3ab²+b³

Автор ответа: Has157
1
Вот этот ответ очень просто сегодня нужно знать формулы и всё проблема решена
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