User talk:Norma Khalil

Welcome
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Cheers, Matt Westwood (talk)

(Incidentally, I'm interested to see where your addition to the "Proofs" category is going - but it will need to be moved into a page with a meaningful title.) --Matt Westwood 06:20, 28 February 2010 (UTC)

From The Proofs Category
Suppose that n^2 is a perfect square. then upon division by 3, there exists an integer q such that n has one of the folowing forms: n= 3q, n= 3q+1, or ne 3q+2. considiring each form separately, three possible results of n^2 if n = 3q, then n^2 = 9q^2 thus, n^2 = 3(3q^2)