Let alpha and beta be the roots of the e...

Let `alpha` and `beta` be the roots of the equation `x^2-6x-2=0`. If `a_n=alpha^n-beta^n`, for `nge1`, then the value of `(a_10-2a_8)/(2a_9)` is equal to

A

1

B

2

C

3

D

4

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Let alpha and beta be the roots of equation x^(2)-6x-2=0." If " a_(n)=alpha^(n)-beta^(n)," for "nge1 , "then the value of " ((a_(10))-(2a_(8)))/(2a_(9)) is equal to -

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