2/x^2-4-1/x+2=0(分式方程)怎么做?

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2/x^2-4-1/x+2=0(分式方程)怎么做?2/x^2-4-1/x+2=0(分式方程)怎么做?2/x^2-4-1/x+2=0(分式方程)怎么做?解2/(x²-4)-1/(x+2)=0两

2/x^2-4-1/x+2=0(分式方程)怎么做?
2/x^2-4-1/x+2=0(分式方程)怎么做?

2/x^2-4-1/x+2=0(分式方程)怎么做?

2/(x²-4)-1/(x+2)=0
两边乘以x²-4=(x-2)(x+2)得:
2-(x-2)=0
2-x+2=0
∴x=4
经检验x=4是方程的根

(4-x)/(x^2-4)=0
x=4

设t=1/x,则2t-4-t+2=0.原理是这样,求解出t,t的倒数即是x。