Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 7 - Section 7.4 - Adding, Subtracting, and Multiplying Radical Expressions - Exercise Set - Page 440: 92

Answer

Multiplying $(x-2)(x+3)$ is similar to multiplying $\left( \sqrt{x}-\sqrt{2}\right)\left( \sqrt{x}+3\right)$ because both use the FOIL method. That is, $(a+b)(c+d)=ac+ad+bc+bd.$

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