Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 12 - Review - Page 908: 104



Work Step by Step

Step 1: $\log_{x} 81=4$ Step 2: $x^{4}=81$ Step 3: $x=\sqrt[4] {81}$ Step 4: $x=(81)^{\frac{1}{4}}$ Step 5: $x=(3^{4})^{\frac{1}{4}}$ Step 6: $x=3$ Therefore, the solution set is {$3$}.
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