As for binomial distribution. Binomial is a term with two parts to it.

A Polynomial is anything that looks sorta like ax^2+bx+c. Basically any added number of variables and constants. A binomial is one that only has two elements. So a basic version is x+1.

Binomial distribution is the concept that basically says that when you multiply by a binomial, you have to multiply by every term.

So A*(x+1) becomes A*x+A*1, or x(x+1)=x^2+x.

When you multiply two binomials by each other, they hold to the same rule for both parts.

(x+1)(x+1)= x^2+x+x+1^2. Easy way to remember: FOIL. Stands for First, Outer, Inner, Last. As in, you multiply the First parts together(x times x) then the outer ones(first x times the last 1) the innner two(first 1 times second x) and last two (the ones.) Add everything up, and you're golden.

Pro trick for squaring a binomial: (x+4)^2. Take exponent, apply to first term, so x^2. Then multiply the exponent, the number and the x together(x*4*2=8x) then apply exponent to last term(4^2=16) You get x^2+8x+16, which is (x+4)^2.

Hope that helped. otherwise, I got trolled, and zero ****s are given.