解方程:-x+1分之1+x-1分之2=x平方-1分之4

2024-12-13 12:39:09
推荐回答(1个)
回答1:

1/(x-1)=4/(x^2-1)
1/(x-1)-4/[(x-1)(x+1)]=0
(x+1-4)/[(x-1)(x+1)]=0
(x-3)/[(x-1)(x+1)]=0
x=3