Answer
$\sqrt {5}$
Work Step by Step
$\frac{\sqrt {45}}{10}+\frac{7\sqrt {5}}{10}$ Factor.
$\frac{\sqrt {9}\sqrt {5}}{10}+\frac{7\sqrt {5}}{10}$ Simplify and add.
$\frac{10\sqrt {5}}{10}$ Simplify.
$\sqrt {5}$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 10 - Section 10.4 - Adding, Subtracting, and Multiplying Radical Expressions - Exercise Set - Page 710: 36
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