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Permutations and Combinations: Lesson 4
Part One: Expanding Binomials
Expanding Binomials: The following examples will illustrate how to
expand a binomial to the nth power.
Example 1: Expand (2a-3b)5

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Pre Calculus Math 40S: Explained!
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Permutations & Combinations
Lesson 3, Part One: Expansions
Permutations & Combinations Formulas: The following examples show how
to expand and simplify expressions involving permutations & combinatio

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Permutations and Combinations
Lesson 2, Part One: Basic Combinations
Basic combinations: In the previous lesson, when using the fundamental
counting principal or permutations, the order of items to be

Pre Calculus Math 40S: Explained!
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Permutations & Combinations
Lesson 1, Part One: The Fundamental Counting Principle
The Fundamental Counting Principle: This is an easy way to determine how
many ways you can arrange items. The followin