Elementary Algebra

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

Chapter 6 - Factoring, Solving Equations, and Problem Solving - 6.2 - Factoring the Difference of Two Squares - Problem Set 6.2 - Page 248: 44



Work Step by Step

Using $a^2-b^2=(a+b)(a-b)$, the factored form of the given expression, $ 81x^4-16y^4 ,$ is \begin{array}{l}\require{cancel} (9x^2+4y^2)(9x^2-4y^2) .\end{array} Since the second factor is still a difference of $2$ squares, using the same factoring technique, the completely factored form of the expression above is \begin{array}{l}\require{cancel} (9x^2+4y^2)(3x+2y)(3x-2y) .\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.