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If A =(x-1)/(x+1)then, the value of A-1...

If `A =(x-1)/(x+1)`then, the value of `A-1/A` is:
यदि `A =(x-1)/(x+1)` तो `A-1/A` का मान:

A

`(x^2-1)/(-4(2x+1))`

B

`-(4x)/(x^2-1)`

C

`(x^2-1)/(-4(2x-1))`

D

`(-4(2x-1))/(x^2-1)`

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