Binomial Theorem

Binomial Expression: An algebraic expression consisting of two terms with a positive or negative sign between them. Example: (x+y)
The expansion of binomial expression raised to power n is called Binomial Theorem.

are Binomial Coefficients.
Points to Note:

1. There are total of (n+1) terms in the expansion.
2. In each term, sum of the indices of x and y is equal to n.