Предмет: Алгебра, автор: Аноним

Преобразуйте выражения а)(5-х)в квадрате; б)(2у-9)(2у+9)

Ответы

Автор ответа: wieslawlozickip5w1nd

Ответ:

Объяснение:

a) (5-x)²=25-10x+x²

б)(2у-9)(2у+9)=4y²-81

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