Answer
$\dfrac{11}{12}$
Work Step by Step
$\dfrac{x^{2}+xy-y^{2}}{x+y};$ $x=5;$ $y=7$
Substitute $x$ with $5$ and $y$ with $7$ and simplify:
$\dfrac{5^{2}+(5)(7)-7^{2}}{5+7}=\dfrac{25+35-49}{12}=\dfrac{11}{12}$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 7 - Review - Page 557: 4
Update this answer!
You can help us out by revising, improving and updating this answer.
Update this answerAfter 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.
