College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter 1 - Equations and Inequalities - Exercise Set 1.2 - Page 119: 88



Work Step by Step

Solve for $x$ $\frac{13x-6}{4}=5x+2$ $13x-6=4(5x+2)$ $13x-6=20x+8$ $13x-20x=8+6$ $-7x=14$ $x=-2$ Solve for $y$ $5-y=7(y+4)+1$ $5-y=7y+28+1$ $5-y=7y+29$ $5-29=7y+y$ $-24=8y$ $y=-3$ Substitute $x$ and $y$ values in $x^{2}-(xy-y) = (-2)^{2}-((-2 \times -3)-(-3))$ $=4-(6+3)$ $=4-9$ $x^{2}-(xy-y) = -5$
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.