Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 11 - Additional Topics - 11.4 - Complex Numbers - Problem Set 11.4: 19

Answer

$-2-6i$

Work Step by Step

Writing the two expressions within the parenthesis together as one large expression and then combining like terms, we obtain: $(5+2i)-(7+8i)$ $=5+2i-7-8i$ $=5-7+2i-8i$ $=-2-6i$
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