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A Perfect Square Problem (Posted on 2006-06-03) Difficulty: 4 of 5
Find all possible pairs of positive integers (x,y) such that both x+5y and y+5x are perfect squares.

See The Solution Submitted by K Sengupta    
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Hints/Tips Hint | Comment 6 of 10 |

Set the first expression equal to the square of a  linear expression in x and set the second expression equal to the square of a linear expression in y.


Edited on June 3, 2006, 10:13 pm
  Posted by K Sengupta on 2006-06-03 22:12:54

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