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 - 10.8 The Complex Numbers - 10.8 Exercise Set - Page 686: 30



Work Step by Step

Removing the grouping symbols and then adding the real parts and the imaginary parts, the given expression, $ (8+7i)-(2+4i) ,$ simplifies to \begin{array}{l}\require{cancel} 8+7i-2-4i \\\\= (8-2)+(7i-4i) \\\\= 6+3i .\end{array}
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