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 7.7 - Complex Numbers - Exercise Set - Page 572: 149

Answer

True.

Work Step by Step

Plugging in $x=-\sqrt6$: $3(-\sqrt6)^2=3\cdot6=18$ Thus the statement is true.
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