# Chapter 8: Rational Can Be Over the Top

Difficulty Level:

**Advanced**Created by: CK-12

**Introduction**

In this chapter you will learn about rational expressions. You will learn how to simplify a rational expression and how to recognize all restrictions on the denominator. In addition, you will learn to perform the basic operations of addition and subtraction of rational expressions as well as how to determine the least common multiple for the given expressions. The operations of multiplication will also be included in this chapter. The chapter will conclude with the graphing of rational expressions.

**Lessons**

In this chapter you will do the following lessons:

- Simplifying a rational expression
- Stating the restrictions on the denominator
- A review of adding and subtracting fractions
- The least common multiple for a rational expression
- Addition and subtraction of rational expressions
- A review of multiplication and division of fractions
- Multiplication and division of rational expressions
- Understanding a rational function
- Graphing rational functions

## Chapter Outline

- 8.1. Introduction to Rational Expressions
- 8.2. Adding and Subtracting Rational Expressions
- 8.3. Multiplying and Dividing Rational Expressions
- 8.4. Quiz
- 8.5. Graphing Rational Functions

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## Difficulty Level:

Advanced## Authors:

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## Date Created:

Dec 23, 2014## Last Modified:

Jan 14, 2015**Save or share your relevant files like activites, homework and worksheet.**

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