Answer
36$r^{2}$ -4$x^{2}$
Work Step by Step
(6r - 2x )(6r + 2x ) the same and difference of the same two terms
$(6r)^{2}$ - $(2x)^{2}$
36$r^{2}$ -4$x^{2}$
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 5 - Section 5.6 - Special Products - Exercise Set - Page 388: 80
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