1. Lesson 2

1.9. Explore 5

Mathematics 30-2 Module 3

Module 3: Permutations, Combinations, and the Fundamental Counting Principle

 

In Self-Check 3, you simplified algebraic fractions involving factorial notation by dividing the numerator and the denominator by the same factors. For example,

 

 

 

 

or

 

 

 

In a similar fashion, expressions with factorials can be simplified to solve equations.

 

Solving a Factorial Equation will show you how to simplify an expression that includes factorials in order to solve an equation.

 

 

This is a play button for Solving a Factorial Equation.

 



textbook

If you would like to review another example of how to solve an equation that involves factorial notation, read “Example 4” on page 80 of your textbook.

 

 

 Self-Check 4
  1. Solve for n given the equation  where n ∈ I. Answer
  2. Complete “Your Turn” on page 80 of your textbook. Answer
  3. Complete questions 6.d., 6.e., 11.c., and 11.d. on page 82 of your textbook. Answer