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: 29

Answer

$-71$

Work Step by Step

RECALL: $(a-b)(a+b)=a^2-b^2$ Use the formula above with $a=2$ and $b=5\sqrt{3}$ to obtain: $=2^2- (5\sqrt{3})^2 \\=4-5^2(3) \\=4-25(3) \\=4-75 \\=-71$
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