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Thread: Modulo

  1. #1
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    Modulo

    Is there positive integers x, y so x^2-2y^2≡3 or x^2-2y^2≡-3 (mod 8)?
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  2. #2
    wps
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    Re: Modulo

    Use this property: n^2 \equiv 0,1,4 ~ (\mod 8)
    Thanks from topsquark
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