Ch 8: Rational Expressions

Rational Expressions

It can be challenging remembering math definitions. Wouldn't it be great if there were easy, rational explanations for some? Luckily, when it comes to rational expressions, there is indeed an easy, rational definition! Rational expressions are simply fractions that include variables in the numerator, denominator, or both, such as in 3x/x+3. In other words, rational expressions are fractions that contain polynomials. Easy, right?

In this series of lessons on rational expressions, you'll recall skills you've learned about how to treat fractions and discover how you can use similar applications with rational expressions. First, you'll learn how to simplify and solve rational expressions. Then, as you continue through the lessons, you'll learn to add, subtract, multiply, and divide them, identifying concepts like the least common multiple. You'll be able to apply and solidify your skills with these problems by going through several practice examples along the way.

Finally, you'll expand on your skills and learn how to solve rational equations, again going through plenty of practice problems to sharpen your skills. You'll even stretch your brain power to learn more abstract examples.

These lessons are taught by well-informed instructors. They also helped put together several short multiple-choice quizzes and a chapter exam so you can test your knowledge of rational expressions.