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: 20

Answer

$-4-3i$

Work Step by Step

Writing the two expressions within the parenthesis together as one large expression and then combining like terms, we obtain: $(3+i)-(7+4i)$ $=3+i-7-4i$ $=3-7+i-4i$ $=-4-3i$
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