Answer
$x^2-81$.
Work Step by Step
The given expression is
$=(x+9)(x-9)$
Use sum and difference pattern $(a+b)(a-b)=a^2-b^2$.
We have $a=x$ and $b=9$.
$=x^2-9^2$
Simplify.
$=x^2-81$
Hence, the product is $x^2-81$.
Big Ideas Math - Algebra 1, A Common Core Curriculum
by Larson, Ron; Boswell, Laurie
Published by
Big Ideas Learning LLC
ISBN 10:
978-1-60840-838-2
ISBN 13:
978-1-60840-838-2
Chapter 7 - Polynomial Equations and Factoring - Chapter Review - Page 410: 13
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.
