(x-1)的二次方+2x(x-1)=0(用因式分解法解)
问题描述:
(x-1)的二次方+2x(x-1)=0(用因式分解法解)
答
(x - 1)" + 2x (x - 1) = 0
(x - 1)(x - 1 + 2x) = 0
(x - 1)(3x - 1) = 0
x1 = 1
x2 = 1/3可以吗?