Предмет: Алгебра, автор: Зязясамыйлучший

Выполните умножение : a) (d +8 )(d-6)= ; б) ( 8d -7 )(8d+8)= ; в) (5a - 2c)(6a-c)= ; г) ( d-2 )(d^2 -2d^2+7 )=

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Автор ответа: nastyamihe

a)=d²-6d+8d-48=d²+2d-48
б)64d²+64d-56d-56=64d²+8d-56
в)30a²-5ac-12ac-2c²=30a²-17ac-c²
г)d³-2d³+7d-2d²+4d²-14=d³+7d+2d²-14

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