Question

what is a binomial?

Answer 1

hey turing test, been a while since I've seen you :D

Answer 2

http://en.wikipedia.org/wiki/Binomial
The easiest way to describe it in full.

Answer 3

Hey Anikate; been busy :P

you need to clarify a bit; a binomial what?

example:\[(x+y)^n=\sum_{k=0}^n\binom nkx^{n-k}y^k\]is the "binomial expansion of the binomial \((x+y)^n\)
\[\binom nk={n!\over k!(n-k)!}\]is the "binomial coefficient" of each term

Answer 4

bi=two
nomial=number

so it's a two-number or two-term thingy, but what I wrote above is the "binomial formula" and is likely what you meant