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x^2/(x^2-2)=3
x^2=3x^2-6
x^2=3
x=±√3.
[1/(1-x)-1/(1+x)]/[x/(x^2-1)+x]
=[(1+x-1+x)/(1-x^2)]/[(x+x^2)/(x^2-1)]
=-2x/(x+x^2)
=-2/(1+x)
=-2/(1±√3)
-2/(1+√3)=-2(1-√3)/(1-3)=1-√3
-2/(1-√3)=-2(1+√3)/(1-3)=1+√3
x^2=3x^2-6
x^2=3
x=±√3.
[1/(1-x)-1/(1+x)]/[x/(x^2-1)+x]
=[(1+x-1+x)/(1-x^2)]/[(x+x^2)/(x^2-1)]
=-2x/(x+x^2)
=-2/(1+x)
=-2/(1±√3)
-2/(1+√3)=-2(1-√3)/(1-3)=1-√3
-2/(1-√3)=-2(1+√3)/(1-3)=1+√3
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