Answer
$49x^2-9y^2$
Work Step by Step
RECALL:
$(a+b)(a-b) = a^2-b^2$
Multiply the given expression using the formula above with $a=7x$ and $b=3y$ to obtain:
$=(7x)^2-(3y)^2
\\=49x^2-9y^2$
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter P - Section P.4 - Polynomials - Exercise Set - Page 56: 72
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.
