Answer
$-7-8i$
Work Step by Step
We combine like terms to obtain:
$(-1-2i)+(-6-6i)$
=$-1-2i-6-6i$
=$-1-6-2i-6i$
=$-7-8i$
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: 24
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