
(x-y)2n次方·(y-x)2n-1次方·(y-x)4n次方·(x-y)2n+1次方(n为正整数)
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(x-y)2n次方·(y-x)2n-1次方·(y-x)4n次方·(x-y)2n+1次方(n为正整数)
=(x-y)2n次方·(-(x-y)2n-1次方)·(x-y)4n次方·(x-y)2n+1次方
=-(x-y)^(2n+2n-1+4n+2n+1)
=-(x-y)^(10n)
=(x-y)2n次方·(-(x-y)2n-1次方)·(x-y)4n次方·(x-y)2n+1次方
=-(x-y)^(2n+2n-1+4n+2n+1)
=-(x-y)^(10n)
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