(x-1)²+2x(x-1)=0
问题描述:
(x-1)²+2x(x-1)=0
答
(x-1)²+2x(x-1)=0
(x-1)【(x-1)+2x】=0
(x-1)(3x-1)=0
x1=1 x2=1/3