(x-y)+(y-x)的三次方的因式分解

问题描述:

(x-y)+(y-x)的三次方的因式分解

(x-y)+(y-x)³
=(y-x)^3-(y-x)
=(y-x)[(y-x)²-1]
=(y-x)(y-x+1)(y-x-1)

﹙x-y﹚+﹙y-x﹚³
=﹙x-y﹚-﹙x-y﹚³
=﹙x-y﹚[﹙1-﹙x-y﹚²]
=﹙x-y﹚﹙1-x+y﹚﹙1+x-y﹚.

=(y-x)^3-(y-x)=(y-x)[(y-x)^2-1]=(y-x)(y-x+1)(y-x-1)