因式分解(X+Y)^-4(2X-Y)^怎么做怎么做
问题描述:
因式分解(X+Y)^-4(2X-Y)^怎么做怎么做
答
(X+Y)²-4(2X-Y)²
=(x+y-4x+2y)(x+y+4x-2y)
=(-3x+3y)(5x-y)
=-3(x-y)(5x-y)