(x-y)·2(x-y)²·3(x-y)³ 计算

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(x-y)·2(x-y)²·3(x-y)³ 计算
(x-y)·2(x-y)²·3(x-y)³ 计算

(x-y)·2(x-y)²·3(x-y)³ 计算
6（x-y）6次方