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Math Help - Pythagorean Triples

  1. #1
    Junior Member
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    Pythagorean Triples

    I need help to solve the following problem. See below for attachment


    Thanks
    Attached Thumbnails Attached Thumbnails Pythagorean Triples-untitled.jpg  
    Last edited by mr fantastic; February 13th 2010 at 03:56 PM. Reason: Re-inforced the edit made by the OP to post title
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  2. #2
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    Opalg's Avatar
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    Have you tried using the hint? If x is even then x^2 is congruent to 0 (mod 4). If x is odd then x^2 is congruent to 1 (mod 4).
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