title WebLog #574 Topic: 2008-07-11 11.03.52 rtw: Square Theorem
user rtw
ip 128.61.17.104
vol 1

x²=(x-n)*(x+n)+n²

For any real numbers >0.

N is usually less than 10, but any integer will work.


The goal is to make squaring numbers easier.
For example:

x=47
n=3

x²=(47-3)*(47+3)+3²
x²=(44)*(50)+9
x²=2200+9
x²=2209