用因式分解,解方程(5x-1)^2=3(5x-1)
问题描述:
用因式分解,解方程(5x-1)^2=3(5x-1)
记得标准答案是x1=1/5 、 x2=4/5
答
(5x-1)^2=3(5x-1)
(5x-1)^2-3(5x-1)=0
(5x-1)(5x-1-3)=0
5x-1=0,x1=1/5;
5x-1-3=0,x2=4/5.