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Let $a\star b = a^b+ab$. If $a$ and $b$ are positive integers greater than or equal to 2 and $a\star b =15$, find $a+b$.

 Nov 16, 2014

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 #1
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a = 3,  b = 2  There aren't many possibilities to test!

.

 Nov 16, 2014

1+0 Answers

 #1
avatar+33661 
+5
Best Answer

a = 3,  b = 2  There aren't many possibilities to test!

.

Alan Nov 16, 2014

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