Answer
(a+4)(a-4)(b-4)
Work Step by Step
$a^{2}$(b-4)-16(b-4)=($a^{2}$-16)(b-4)=($a^{2}$-$4^{2}$)(b-4)=
(a+4)(a-4)(b-4)
Algebra: A Combined Approach (4th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321726391
ISBN 13:
978-0-32172-639-1
Chapter 6 - Section 6.5 - Factoring by Special Products - Exercise Set - Page 448: 91
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