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Let `alpha` and `beta` be the roots of the equation `x^2-6x-2=0` If `a_n=alpha^n-beta^n` for `ngt=0` then find the value of `(a_10-2a_8)/(2a_9)`

A

3

B

`-3`

C

6

D

`-6`

Text Solution

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The correct Answer is:
A
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DISHA PUBLICATION-COMPLEX NUMBERS AND QUADRATIC EQUATIONS -Exercise -2 : Concept Applicator
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