问题标题:
(x-y)的2N次方-(x-y)的2n+1次方+(y-x)的2n-1次方,因式分解
问题描述:

(x-y)的2N次方-(x-y)的2n+1次方+(y-x)的2n-1次方,因式分解

郭雪梅回答:
  答:   (x-y)的2N次方-(x-y)的2n+1次方+(y-x)的2n-1次方   =(x-y)^(2n)-(x-y)^(2n+1)-(x-y)^(2n-1)   =[(x-y)-(x-y)^2-1]*(x-y)^(2n-1)   =-[(x-y)^2-(x-y)+1]*(x-y)^(2n-1)
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