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

If `alpha, beta ,gamma ` are the roots of the equation `x ^(3) + 2x ^(2) - x+1 =0,` then vlaue of `((2- alpha )(2-beta) (2-gamma))/((2+ alpha ) (2+ beta ) (2 + gamma))` is :

A

5

B

`-5`

C

10

D

`5/3`

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The correct Answer is:

B

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