If alpha and beta be root of x^2-6x-2=0 ...

If `alpha` and `beta` be root of `x^2-6x-2=0` with `alpha gt beta` if `a_n=alpha^n-beta^n` for `n ge 1` then the value of `(a_(10)-2a_8)/(3a_9)`

A

2

B

1

C

4

D

3

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A

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