if alpha,beta,gamma are the roots of the...

if `alpha,beta,gamma` are the roots of the equation `x^3-x-1=0` then `(1+alpha)/(1-alpha)+(1+beta)/(1-beta)+(1+gamma)/(1-gamma)` is

A

0

B

`-1`

C

`-7`

D

1

Verified by Experts

The correct Answer is:

C

QUADRATIC EQUATION
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