Intermediate Algebra: Connecting Concepts through Application

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: 44



Work Step by Step

$(5+4i)(3+2i)$ $=5(3+2i)+4i(3+2i)$ $=15+10i+12i+8i^{2}$ $=15+22i+8i^{2}$ $=15+22i+8(-1)$ $=7+22i$
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