Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 7 - Section 7.7 - Complex Numbers - Exercise Set - Page 570: 105



Work Step by Step

Since $i=\sqrt{-1}$ here: $5\sqrt{-16}+3\sqrt{-81}=5\sqrt{16}\sqrt{-1}+3\sqrt{81}\sqrt{-1}=5(4)i+3(9)i=47i$
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