# Ch 5: Calculating Rational Expressions

Let this series of math video lessons guide your study of calculations for rational expressions. Use the short, multiple-choice quizzes that follow each lesson to tell you if additional review is required.

## Calculating Rational Expressions - Chapter Summary and Learning Objectives

Within your algebra study, you'll want to become adept at performing all basic operations on rational expressions, from adding to dividing. This chapter of brief video lessons can help you out with that, in addition to guiding you in solving rational equations, simplifying complex rational expressions and solving equations of direct variation. By the time you're finished, you should be comfortable with the following:

• Reciprocals of rational expressions
• Graphing reflections across axes, the origin and line Y=X
• Solving rational equations
• Finding the least common denominator

Video Objective
How to Multiply and Divide Rational Expressions Learn about the major role that reducing plays in this procedure.
Multiplying and Dividing Rational Expressions: Practice Problems Practice the steps for multiplying and dividing rational polynomials.
How to Add and Subtract Rational Expressions Use your knowledge of fractions, factoring and FOIL in this lesson's exercises.
Practice Adding and Subtracting Rational Expressions Discover a handy method for adding and subtracting rational expressions and a trick for remembering when a common denominator is needed.
How to Solve a Rational Equation Learn to be on the lookout for extraneous solutions and practice the necessary steps for solving rational equations.
Rational Equations: Practice Problems Find out why clearing an equation of fractions is crucial and the steps that should then follow in solving rational equations.
Division and Reciprocals of Rational Expressions Review rational numbers, rational expressions and reciprocals.
Simplifying Complex Rational Expressions Explore how to simplify, flip a fraction, look for common terms and multiply for solutions.
Solving Equations of Direct Variation Learn how to use the formula for direct variation.
How to Graph Reflections Across Axes, the Origin, and Line Y=X Learn the rules of reflections and strategies for drawing reflections.
Solving Rational Equations and Finding the Least Common Denominator Take a look at strategies for finding the least common denominator, writing your expressions and solving equations for x.

11 Lessons in Chapter 5: Calculating Rational Expressions
Test your knowledge with a 30-question chapter practice test
Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

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