Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter P - Section P.6 - Rational Expressions - Exercise Set - Page 84: 4


$x=\pm7$ must be excluded from the domain

Work Step by Step

The denominator can't equal zero. $x^2 - 49=0$ $x^2=49$ $x=\pm\sqrt {49}=\pm7$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.