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Integer

Posted: Wed Dec 27, 2017 4:16 am
by Katy729
Find all natural numbers $(a,b)$ such that
$\frac{b^2+a}{ab-1}$ in an integer.

Re: Integer

Posted: Tue Feb 06, 2018 10:02 pm
by ahmedittihad
There exists another thread on this problem. Please delete this one.