(x-y)^2+5(x-y)+6
问题描述:
(x-y)^2+5(x-y)+6
因式分解
答
解
(x-y)²+5(x-y)+6
=[(x-y)+3][(x-y)+2]
=(x-y+3)(x-y+2)——将x-y看成一个整体