x⼀x-1-1=3⼀(x-1)(x+2)

2024-12-28 06:54:44
推荐回答(2个)
回答1:

解:x/x-1*(x-1)(x+2)-(x-1)(x+2)=3/(x-1)(x+2)*(x-1)(x+2)
x(x+2)-(x-1)(x+2)=3
x^2+2x-x^2-x+2=3
x=1
把x=1带入(x-1)(x+2)=0
所以x=1是原分式方程的曾根
所以此分式方程无实数根

回答2:

两边同乘(x-1)(x+2)
x^2+2x-x^2-x+2=3
x=1
x-1=0
经检验,x=1是原方程增根
原方程无解