因式分解(2x+y)^2-(x+2y)^2
问题描述:
因式分解(2x+y)^2-(x+2y)^2
答
(2x+y)^2-(x+2y)^2
=(2x+y-x-2y)(2x+y+x+2y)
=(x-y)(3x+3y)
=3(x-y)(x+y)