Algebra 1

Published by Prentice Hall
ISBN 10: 0133500403
ISBN 13: 978-0-13350-040-0

Chapter 11 - Rational Expressions and Functions - Cumulative Test Prep - Multiple Choice - Page 710: 15



Work Step by Step

$\sqrt5(2+\sqrt10)=2\sqrt5+\sqrt 5 \sqrt 10$ $=2\sqrt5+\sqrt {50}$ $=2\sqrt5+\sqrt {25 \cdot 2}$ $=2\sqrt5+5\sqrt {2}$ Hence, the correct answer is $C$.
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