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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