分解因式：[(x-1)+(y-xy)]²怎样变成[(x-1)*(1-y)]²_数学解答

分解因式：[(x-1)+(y-xy)]²怎样变成[(x-1)*(1-y)]²

人气：301 ℃　时间：2020-02-05 07:28:10

解答

[ (x - 1) + (y - xy) ]"
= [ (x - 1) - (xy - y) ]"
= [ (x - 1) - y(x - 1) ]"
= [ (x - 1)(1 - y) ]"