College Algebra 7th Edition

Published by Brooks Cole
ISBN 10: 1305115546
ISBN 13: 978-1-30511-554-5

Chapter 1, Equations and Graphs - Chapter 1 Review - Exercises - Page 170: 66


(a) $-3-2i$ (b) $2+8i$

Work Step by Step

(a) $(3-6i)-(6-4i)=3-6-6i+4i=-3-2i$ (b) $4i(2- \frac{1}{2}i)=8i-2i^{2}=8i-2*-1=8i+2=2+8i$
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