Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 10 - Section 10.7 - Complex Numbers - Practice: 3

Answer

$-5i\sqrt 2$

Work Step by Step

Step 1: $-\sqrt (-50)$ Step 2: $-\sqrt (-1\times50)$ Step 3: $-\sqrt (-1)\times\sqrt 50$ Step 4: $\sqrt (-1)=i$ and $\sqrt 50=\sqrt (2\times25)$ Step 5: $-i\sqrt (2\times25)$ Step 6: $-i\times5\times\sqrt 2$ Step 7: $-5i\sqrt 2$
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