Introductory Algebra for College Students (7th Edition)

Published by Pearson
ISBN 10: 0-13417-805-X
ISBN 13: 978-0-13417-805-9

Chapter 5 - Section 5.4 - Polynomials in Several Variables - Exercise Set: 16

Answer

$-5x^4-4xy-9y^3$

Work Step by Step

Removing the grouping symbols and then combining like terms, the given expression, $ (x^4-7xy-5y^3)-(6x^4-3xy+4y^3) ,$ simplifies to \begin{array}{l}\require{cancel} x^4-7xy-5y^3-6x^4+3xy-4y^3 \\\\= (x^4-6x^4)+(-7xy+3xy)+(-5y^3-4y^3) \\\\= -5x^4-4xy-9y^3 .\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.