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The expression (1)/(1+(x)/(1-(x)/(x+2...

The expression
`(1)/(1+(x)/(1-(x)/(x+2)))div ((1)/(1-x)+(1)/(1+x))/((1)/(1-x)-(1)/(1+x))` (a) `(2x)/(x^(2)+2x+2)` (b) `(2x)/(x^(2)-1)` (c) 1 (d) `x^(2)-1`

A

`(2x)/(x^(2)+2x+2)`

B

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

C

1

D

`x^(2)-1`

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