Answer
$4+3i$
Work Step by Step
Use: $\sqrt {-1}=i$
$4+\sqrt {-9}=4+\sqrt {9(-1)}=4+\sqrt 9\sqrt {-1}=4+3i$
Algebra and Trigonometry 10th Edition
by Larson, Ron
Published by
Cengage Learning
ISBN 10:
9781337271172
ISBN 13:
978-1-33727-117-2
Chapter 1 - Review Exercises - Page 153: 61
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