perplexus.info :: Just Math : A Perfect Square Problem

A Perfect Square Problem (Posted on 2006-06-03)

Find all possible pairs of positive integers (x,y) such that both x²+5y and y²+5x are perfect squares.

See The Solution Submitted by K Sengupta

Rating: 5.0000 (1 votes)

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A part of the second half

| Comment 2 of 10 |

For x=y, x=4 produces an answer, but I haven't proved yet if that's the only possibility.

Posted by e.g. on 2006-06-03 10:29:53

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