问题 解答题

(x-y)2n•(y-x)2n-1•(y-x)4n•(x-y)2n+1(n为正整数)

答案

原式=-(x-y)2n•(x-y)2n-1•(x-y)4n•(x-y)2n+1

=-(x-y)2n+2n-1+4n+2n+1

=-(x-y)10n

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