Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 10 - Exponents and Radicals - Study Summary - Practice Exercises: 20

Answer

$-3-12i$

Work Step by Step

Adding the real parts and the imaginary parts, the given expression, $ (5-3i)+(-8-9i) ,$ simplifies to \begin{array}{l}\require{cancel} (5-3i)+(-8-9i) \\\\= 5-3i-8-9i \\\\= (5-8)+(-3i-9i) \\\\= -3-12i .\end{array}
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