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[" Tore that if "1" and "y" are both odd...

[" Tore that if "1" and "y" are both odd positive integers then "x^(2)+y^(2)" is even "],[" ut not divisible by "4" ."]

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Prove that if x and y are both odd positive Integers, then x^(2) + y^(2) is even but not divisible by 4.

Prove that if x and y are both odd positive integers then x^(2) + y^(2) is even but not divisible by 4

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