Answer
$5$
Work Step by Step
$(\sqrt{10}+\sqrt5)(\sqrt{10}-\sqrt5)=(\sqrt{10})^2-(\sqrt5)^2=10-5=5$
Intermediate Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-894-7
ISBN 13:
978-0-13417-894-3
Chapter 7 - Section 7.5 - Multiplying with More Than One Term and Rationalizing Denominators - Concept and Vocabulary Check - Page 549: 2
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