College Algebra 7th Edition

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

Chapter 1, Equations and Graphs - Section 1.5 - Complex Numbers - 1.5 Exercises: 29

Answer

$30+10i$

Work Step by Step

$(7-i)(4+2i)=28+14i-4i-2i^{2}=28+14i-4i-2*-1=28+2+14i-4i=30+10i$
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