Date: Aug 8, 2011 7:25 PM Author: Deep Deb Subject: ----------- math reference I would appreciate it very much if someone can refer me to an

appropriate reference where following statement is justified.

Statement: Every integer N that is not 2mod4 can be expressed as the

difference of two squares.

Example: 1684^2 - 1441^2 = 379688^2 - 379687^ = 15^5