Date: Dec 14, 2012 7:04 PM Author: brian jasper Subject: Prove K^2 mod 4 = 1 I have been working on this for far too long:(

Can someone let me know if this is correct?

"k = 2n + 1. Then k^2 (is congruent to) 4n^2 + 4n + 1 (is congruent to) 1 mod 4"

Should I add more to it? Am I at least on the right track?