- #1

Darth Frodo

- 210

- 1

## Homework Statement

I'm trying to derive the PGF for the Binomial.

## The Attempt at a Solution

I have it whittled down to [itex]\sum^{n}_{x=0}(nCx)(\frac{sp}{1-p})^x[/itex]

I just don't know how to simplify this further. Any help is most appreciated.