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 596: 106

Answer

FALSE. $2x^2 - 6x = 5$ Divide both sides by $2$. Thus, the equation becomes: $x^2 - 3x = \frac{5}{2}$ The coefficient of the $x$-term is $-3$. Half of $-3$ is $-\frac{3}{2}$, and $(-\frac{3}{2})^2$ is $\frac{9}{4}$. Thus, $\frac{9}{4}$ must be added to both sides to complete the square.

Work Step by Step

$2x^2 - 6x = 5$ Divide both sides by $2$. Thus, the equation becomes: $x^2 - 3x = \frac{5}{2}$ The coefficient of the $x$-term is $-3$. Half of $-3$ is $-\frac{3}{2}$, and $(-\frac{3}{2})^2$ is $\frac{9}{4}$. Thus, $\frac{9}{4}$ must be added to both sides to complete the square.
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