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: 46

Answer

$-1+3i$

Work Step by Step

(Recall, we must distribute the negative to everything in the second set of parenthesis.) Adding the real terms together and the imaginary terms together, we obtain: $(7-2i)-(6-4i)+(-2+i)$ =$7-2i-6+4i-2+i$ =$(7-6-2)+(-2i+4i+i)$ =$-1+3i$
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