3

This is an extremely simple problem, but I can't find an example anywhere for some reason.

I know that $30^k$ is not correct

But I have no idea what else makes sense.

123
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  • Hint: $ \ 25^k \ = \ (5^2)^k \ = \ 5^{2k} \ = \ 5^{k \ \cdot \ 2} \ = \ (5^k)^2 \ $ . – colormegone Feb 05 '16 at 00:30
  • "What is " is a question that can't be answered without guesswork on our part. If you want help with simplifying or calculating an expression say so. – Rob Arthan Feb 05 '16 at 00:37
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    You're right, I just thought this could be further simplified, but I was incorrect. – 123 Feb 05 '16 at 00:44

1 Answers1

5

This is about a simplified as you can get. You can also write it as $5^k(5^k+1)$. if you prefer that. There's no simple formula like $a^k$.

Stella Biderman
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