Объяснение:
y(y²+7)(9y–6)
(y³+7y)(9y–6)
9y⁴–6y³+63y²–42y
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Объяснение:
y(y²+7)(9y–6)
(y³+7y)(9y–6)
9y⁴–6y³+63y²–42y