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If `alpha,beta,gamma` are the roots of `x^3-x^2-1=0` then the value of `(1+alpha)//(1-alpha)+(1+beta)//(1-beta)+(1+gamma)//(1-gamma)` is equal to `-5`

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If `alpha,beta,gamma` are the roots of `x^3-x^2-1=0` then the value of `(1+alpha)//(1-alpha)+(1+beta)//(1-beta)+(1+gamma)//(1-gamma)` is equal to `-5` b. `-6` c. `-7` d. `-2`
A. -7
B. -6
C. -5
D. -4
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Correct Answer - C
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