College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter P - Prerequisites: Fundamental Concepts of Algebra - Exercise Set P.6 - Page 86: 2

Answer

-9

Work Step by Step

To determine what must be excluded from the domain, we set the denominator equal to 0. x + 9 = 0 Subtracting 9 from both sides, we find x = -9 makes the denominator 0. Thus, -9 must be excluded.
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