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:
$(5+2i)-(7+8i)$
$=5+2i-7-8i$
$=5-7+2i-8i$
$=-2-6i$
Elementary Algebra
by Kaufmann, Jerome; Schwitters, Karen;
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 - Page 493: 19
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