Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 6 - Section 6.1 - Rational Expressions and Functions; Multiplying and Dividing - Exercise Set - Page 416: 120

Answer

See below.

Work Step by Step

The domain of rational functions is the set of all real numbers except those for which the denominator equals $0$, because then the function is undefined. Thus to determine the domain of a rational function, we make the denominator equal to zero. Then the values that make the denominator zero are the numbers excluded from the function's domain.
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