Functions Modeling Change: A Preparation for Calculus, 5th Edition

Published by Wiley
ISBN 10: 1118583191
ISBN 13: 978-1-11858-319-7

Chapter 4 - Exponential Functions - Exercises to Skills for Chapter 4 - Page 185: 34



Work Step by Step

Using the fact that $\sqrt{a}=a^\frac{1}{2}$ and that $(a^b)^n=a^{bn}$, the expression becomes $$\sqrt{x^4}=(x^4)^\frac{1}{2}=x^{4\cdot \frac{1}{2}}=x^2$$
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