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: 27

Answer

$-1+12i$

Work Step by Step

We first use the distributive property to simplify. Then, we combine like terms to obtain: $(-9+7i)-(-8-5i)$ =$-9+7i+8+5i$ =$-9+8+7i+5i$ =$-1+12i$
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