Answer
$3+4i$
Work Step by Step
$\sqrt 9+\sqrt {-16}$
=$3+\sqrt {-1\times16}$
=$3+(\sqrt {-1}\times\sqrt {16})$
=$3+(i\times\sqrt {16})$
=$3+(i\times4)$
=$3+4i$
Intermediate Algebra: Connecting Concepts through Application
by Clark, Mark; Anfinson, Cynthia
Published by
Brooks Cole
ISBN 10:
0-53449-636-9
ISBN 13:
978-0-53449-636-4
Chapter 8 - Radical Functions - 8.5 Complex Numbers - 8.5 Exercises - Page 663: 15
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