因式分解x2+y-xy-x
问题描述:
因式分解x2+y-xy-x
答
x²+y-xy-x=﹙x²-xy﹚+﹙y-x﹚
=x﹙x-y﹚-﹙x-y﹚
=﹙x-y﹚﹙x-1﹚