解方程2/(x^2-1)=1+1/(x-1)

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解方程2/(x^2-1)=1+1/(x-1)解方程2/(x^2-1)=1+1/(x-1)解方程2/(x^2-1)=1+1/(x-1)两边同时乘以x^2-1∴2=x^2-1+x+1x^2+x-2=0(x

解方程2/(x^2-1)=1+1/(x-1)
解方程2/(x^2-1)=1+1/(x-1)

解方程2/(x^2-1)=1+1/(x-1)
两边同时乘以x^2-1
∴2=x^2-1+x+1
x^2+x-2=0
(x-1)(x+2)=0
x1=1,x2=-2
∵x^2-1≠0
∴x≠±1
∴x=-2

2/(x^2-1)=1+1/(x-1)
x= -2