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Prove by induction that the integer next...

Prove by induction that the integer next greater than `(3+sqrt(5))^n` is divisible by `2^n` for all `n in N`.

A

`2 ^( n -1)`

B

`2 ^( n +1)`

C

`2^(n +2)`

D

Not divisible by 2

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The correct Answer is:
B
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