Answer
$225+5b-30\sqrt {5b}$
Work Step by Step
Step 1: $(15-\sqrt {5b})^{2}$
Step 2: $15^{2}+(\sqrt {5b})^{2}-2(15)(\sqrt {5b})$
Step 3: $225+5b-30\sqrt {5b}$
Intermediate Algebra: Connecting Concepts through Application
by Clark, Mark; Anfinson, Cynthia
Published by
Brooks Cole
ISBN 10:
0-53449-636-9
ISBN 13:
978-0-53449-636-4
Chapter 8 - Radical Functions - 8.3 Multiplying and Dividing Radicals - 8.3 Exercises - Page 643: 34
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