x-1分之x-1=(x-1)(x+2)分之3

2024-12-25 20:17:28
推荐回答(1个)
回答1:

(x-1)分之x-1=(x-1)(x+2)分之3
(x-1)分之(x-x+1)=(x-1)(x+2)分之3
x+2=3
x=1
经检验,x=1是增根