Answer
$x=-2~or~x=2$
Work Step by Step
$\log11=\log(x^2+7)$
Using the One-to-One Property:
$x^2+7=11$
$x^2=4$
$x=±2$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 5 - 5.2 - Logarithmic Functions and Their Graphs - 5.2 Exercises - Page 378: 31
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