Answer
$ 5i$
Work Step by Step
$\sqrt {(4+3i)(3i-4)}=\sqrt {(3i)^2-(4)^2}=\sqrt {-9-16}=5i$
Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0-32193-104-1
ISBN 13:
978-0-32193-104-7
Appendix A - Review - A.11 Complex Numbers - A.11 Assess Your Understanding - Page A95: 52
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