Intermediate Algebra for College Students (7th Edition)

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 - Exercise Set - Page 552: 136

Answer

Does not make sense.

Work Step by Step

The given expression is $=(\sqrt2+\sqrt5)^2$ Use the special-product formula. $(A+B)^2=A^2+2AB+B^2$ $=(\sqrt2)^2+2(\sqrt2)(\sqrt5)+(\sqrt5)^2$ Use product rule to simply. $=2+2\sqrt{10}+5$ Add like terms. $=7+2\sqrt{10}$ Hence, the statement does not make sense.
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