# Binomial Expansion Tutorial

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How the function nCr is used in the binomial expansion and in the binomial distribution?

A-level Maths : The nCr function
The function nCr is used in the binomial expansion and in the binomial distribution. In this tutorial you are shown how to work it out manually and on a calculator.
A-level maths : Binomial Expansion : tutorial 1
In this video tutorial you are introduced to the binomial expansion as a method which reduces the amount of working in expanding a bracket to a given positive power.

A-level Maths: Binomial Expansion for a positive integer power : tutorial 2
In this video tutorial you are shown an example of expanding a bracket containing a negative term up to the term in x cubed. The aim of the tutorial is to show you how to set such a problem out and avoid common mistakes.
A-level Maths : Binomial Expansion - finding a term or coefficient : tutorial 3
In this tutorial you are shown how to find a particular term or coefficient of a term in a binomial expansion without having to resort to the full expansion.

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