(y-1)^=3(1-y) 因式分解,速求
问题描述：
(y-1)^=3(1-y) 因式分解,速求
答
(y-1)²=3(1-y)
(y-1)²=-3(y-1)
(y-1)²+3(y-1)=0
(y-1)[(y-1)+3]=0
(y-1)(y+2)=0
y1=1,y2=-2