Intermediate Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-894-7
ISBN 13: 978-0-13417-894-3

Chapter 8 - Section 8.1 - The Square Root Property and Completing the Square - Exercise Set - Page 592: 3


$x=\pm \sqrt {6}$ or, $x=+\sqrt {6},-\sqrt {6}$

Work Step by Step

Given: $7x^2=42$ This can be written as: $x^2=\dfrac{42}{7}$ or, $x^2=6$ Apply The Square Root Property. $x=\sqrt{6}$ Hence, $x=\pm \sqrt {6}$ or, $x=+\sqrt {6},-\sqrt {6}$
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