ORIGINAL: huntingson

The most useful thing I ever realized in the stand is that the square of anyinteger is equal to the square of the previous integer plus the sum of the previous integer and the integer of interest. In mathese:
x^2 = (x-1)^2 +x + (x-1) Pretty obvious when you look at it, but you never need another calculator to figure the square of an integer so long as you can remember that 2X2=4.