Предмет: Алгебра, автор: Даша3455

Представьте в виде многочлена стандартного вида выражение:
(5a+7b)^2 - 70ab

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Автор ответа: Rechnung
0
(5a+7b)²-70ab=(5a)²+2*5a*7b+(7b)²-70ab=25a²+70ab+49b²-70ab=25a²+49b²
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