Nice, I didn't know about that. It works for all cases of k in (1+sqrt(k))^n. Francois Viete invented the binomial function. He did a binomial function with sin(n*theta), and cos(n*theta). I think he probably messed around with vectors in an unconventional way. He is also behind the quadratic formula somewhat.

I changed the link to scribd. I've never used it before so I don't know if it works.

Sorry, but I can't view that file :(, can you give the link again?