College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 1, Equations and Graphs - Section 1.5 - Complex Numbers - 1.5 Exercises: 75

Answer

$25$

Work Step by Step

We are given $z=3-4i$ and $w=5+2i$: $z*\overline{z}=(3-4i)(3+4i)=3^2+12i-12i-4^2i^2=3^{2}+4^{2}=25$
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