Elementary Algebra

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

Chapter 11 - Additional Topics - Chapter 11 Review Problem Set: 47

Answer

$-6+10i$

Work Step by Step

(Recall, we must distribute the negative to everything in the second and third sets of parenthesis.) Adding the real terms together and the imaginary terms together, we obtain: $(-4+i)-(-4-i)-(6-8i)$ =$-4+i+4+i-6+8i$ =$(-4+4-6)+(i+i+8i)$ =$-6+10i$
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