Предмет: Алгебра, автор: Balnur1111111

(3x+y)^3-(27x^3+y^3)-9xy(3x+y)

Ответы

Автор ответа: lidochka085

0

(3x+y)³-(27x³+y³)-9xy(3x+y)= 27х³+27х²у+9ху²+у³-27х³-у³-27х²у-9ху²=0

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