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: 54

Answer

$\frac{9}{4}i=0+\frac{9}{4}i$

Work Step by Step

$\displaystyle \sqrt{\frac{-81}{16}}=\frac{\sqrt{81}i}{\sqrt{16}}=\frac{9}{4}i=0+\frac{9}{4}i$
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