Algebra 1
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Binomial Theorem
A binomial is an expression which contains two terms. (x + y)
The binomial coefficient 
can be calculated by any of the following methods:
nCr, n choose r, button on a scientific calculator which is the number of ways to choose an unordered group of r elements from a fixed group of n elements.
Factorial Notation
Pascal’s Triangle 
The Binomial Theorem is used to expand a binomial expression that has been raised to a power.
Example
Expand (x + 2)3
