(2x-1)(x-1)=3用因式分解法怎么算
问题描述:
(2x-1)(x-1)=3用因式分解法怎么算
答
(2x-1)(x-1)=3
2x^2-3x+1=3
2x^2-3x-2=0
(2x+1)(x-2)=0
x1=-1/2 x2=2