Answer
$2\sqrt 2$
Work Step by Step
$\frac{\sqrt (-80)}{\sqrt (-10)}=\sqrt (\frac{80}{10})=\sqrt 8=\sqrt (4\times2)=2\sqrt 2$
We know that $\sqrt 4=2$, because $2^{2}=4$.
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 7 - Section 7.7 - Complex Numbers - Exercise Set - Page 463: 25
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