The Binomial Theorem  
Summary 
an expression such as (2x + 3) is called a binomial. expanding an expression such as (2x + 3)^{7} is called a binomial expansion. the binomial theorem is a formula for carrying out such an expansion without having to multiply it out. an understanding of the basics of combinations, permutations and factorials is required to fully understand binomial coefficients.

Key Skills 

Vocabulary 
binomial expansion, binomial theorem, binomial coefficient,expression, factorial, combination, permutation, element, exponent,coefficient. 