Precalculus (6th Edition)

Published by Pearson
ISBN 10: 013421742X
ISBN 13: 978-0-13421-742-0

Chapter 1 - Equations and Inequalities - 1.3 Complex Numbers - 1.3 Exercises: 64

Answer

$52$

Work Step by Step

$(6 - 4i)(6+4i) = 36 + 24i - 24i - (4i)^2 = 36 - 16(-1) = 52$
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