Elementary Algebra

Published by Cengage Learning
ISBN 10: 1285194055
ISBN 13: 978-1-28519-405-9

Chapter 1 - Some Basic Concepts of Arithmetic and Algebra - Chapter 1 Review Problem Set: 63

Answer

$-9$

Work Step by Step

Substituting $x= -1 $ and $y= 1 $, the given expression, $ 2xy+6+5xy-8 ,$ evaluates to \begin{array}{l}\require{cancel} 2(-1)(1)+6+5(-1)(1)-8 \\\\= -2+6-5-8 \\\\= 4-5-8 \\\\= -1-8 \\\\= -9 .\end{array}
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.