Please help to prove this expression, so it is always divided with 7:
3^(2n+1) + 2^(n+2) = A(n) / 7
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3^(2n+1) + 2^(n+2) = A(n) / 7 
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3^(2n+1) + 2^(n+2) = A(n) / 7
by japiga on Sat Oct 09, 2010 12:37 pm
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Re: 3^(2n+1) + 2^(n+2) = A(n) / 7 
by Martingale on Sat Oct 09, 2010 2:59 pm
use the strong form of mathematical induction
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