1/x+1 +2/x-1=1/x²-1
问题描述:
1/x+1 +2/x-1=1/x²-1
答
1/x+1 +2/x-1=1/x²-1
1/x+1 +2/x-1=1/(x+1)(x-1)
两边同乘以(x+1)(x-1),得
x-1+2(x+1)=1
3x+1=1
3x=0
x=0
经检验x=0是方程的解.