# Sums of Squares Formula (VIDEO!)

We have a formula for the sums of integers (one-th powers):

1+2+3+…+N

and a formula for the sums of cubes:

1^3 + 2^3 + 3^3 + .. + N^3.

Here, at last, is a video deriving the formula for the sum of squares

1^2 + 2^2 + 3^2 + … + N^2.

We use just simple techniques.

We end with some big questions about all these formulas.

To be complete here are the Sums of Integers and the Sums of Cubes videos.