Thinking Mathematically (6th Edition)

Published by Pearson
ISBN 10: 0321867327
ISBN 13: 978-0-32186-732-2

Chapter 5 - Number Theory and the Real Number System - Chapter Summary, Review, and Test - Review Exercises: 72

Answer

$-6\sqrt{11}$

Work Step by Step

Factor out $\sqrt{11}$ to obtain: $=\sqrt{11}(7-13) \\=\sqrt{11}(-6) \\=-6\sqrt{11}$
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