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Math Forum » Discussions » Math Topics » discretemath

Topic: Prove K^2 mod 4 = 1
Replies: 2   Last Post: Jan 23, 2013 4:51 PM

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grei

Posts: 132
Registered: 11/27/12
Re: Prove K^2 mod 4 = 1
Posted: Dec 22, 2012 7:45 AM
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I would suggest factoring the "4" out of the first two terms- 4n^2+ 4n+ 1= 4(n^2+ n)+ 1- to make it obvious.

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