x-3=x(x-3) 用因式分解法解
问题描述:
x-3=x(x-3) 用因式分解法解
答
解 x-3=x(x-3)
(x-3)-x(x-3) =0
(1-x)(x-3)=0
∴x1=1 ,x2=3
答
移项
x(x-3)-(x-3)=0
(x-3)(x-1)=0
x=3,x=1
答
x-3=x(x-3)
(x-3)-x(x-3)=0
(x-3)(1-x)=0
x1=3,x2=1