Answer
$\sqrt {(x+9)^2} = x+9$
Work Step by Step
Because x is a positive number, $x+9$ is also a positive number.
Therefore,
$\sqrt {(x+9)^2} = x+9$.
Finite Math and Applied Calculus (6th Edition)
by Waner, Stefan; Costenoble, Steven
Published by
Brooks Cole
ISBN 10:
1133607705
ISBN 13:
978-1-13360-770-0
Chapter 0 - Section 0.2 - Exponents and Radicals - Exercises - Page 16: 59
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