(x-y)2n•(y-x)2n-1•(y-x)4n•(x-y)2n+1(n为正整 发布时间:2017-04-27 05:39 │ 来源:www.tikuol.com 题型:解答题 问题: (x-y)2n•(y-x)2n-1•(y-x)4n•(x-y)2n+1(n为正整数)