College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 4, Exponential and Logarithmic Functions - Section 4.5 - Exponential and Logarithmic Functions - 4.5 Exercises: 4

Answer

$x=\left\{-3, 3\right\}$

Work Step by Step

Use the property $a^m = a^n \longrightarrow m=n$ to obtain: $\begin{array}{ccc} &x^2&=&9 \\&\sqrt{x}&=&\pm\sqrt{9} \\&x&=&\pm3 \end{array}$ Thus, the solutions are:$x=\left\{-3, 3\right\}$.
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