Algebra: A Combined Approach (4th Edition)

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: 16

Answer

$\frac{7x\sqrt {7}}{10}$

Work Step by Step

$\frac{3x\sqrt {7}}{5}+\sqrt \frac{7x^2}{100}$ $\frac{3x\sqrt {7}}{5}+\frac{\sqrt 7\sqrt {x^2}}{\sqrt {100}}$ Simplify. $\frac{3x\sqrt {7}}{5}+\frac{x\sqrt {7}}{10}$ The LCD is 10. $\frac{6x\sqrt {7}}{10}+\frac{x\sqrt {7}}{10}$ $\frac{7x\sqrt {7}}{10}$ Add.
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