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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re: computer solution--no proof (spoiler)

| Comment 5 of 10 |

x=11 and y=27 sort of prove my "proof" was no good... :-(

Posted by e.g. on 2006-06-03 20:12:55

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