(2x-y）²-(x-2y)²分解因式怎么做
问题描述：
(2x-y）²-(x-2y)²分解因式怎么做
答
(2x-y）²-(x-2y)²
=[(2x-y）+(x-2y)]*[(2x-y）-(x-2y)]
=(3x-3y)(x+y)
=3(x-y)(x+y)