

In elementary algebra, the binomial theorem describes the algebraic expansion of powers of a binomial.
The general form of the binomial expression is (x+a)n and the expansion of (x+a)n is called the binomial theorem.
where n∈ N (N is natural number)
If x and a are real number then for all n∈ N, then
(x+a)n = nC0 * xn * a0 + nC1 * xn-1 * a1 + nC2 * xn-2 * a2 + ...........+ nCn * x0 * an
= ∑ nCr * xn-r * ar ( 0<=r<=n)
