Intermediate Algebra: Connecting Concepts through Application

Published by Brooks Cole
ISBN 10: 0-53449-636-9
ISBN 13: 978-0-53449-636-4

Chapter 8 - Radical Functions - Chapter Review Exercises - Page 670: 75



Work Step by Step

Step 1: $\sqrt {-25}$ Step 2: $\sqrt{ -1}\times\sqrt {25}$ Step 3: As $\sqrt {-1}=i$, the expression becomes $i\sqrt {25}$. Step 4: $i\sqrt {25}=5i$
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