Answer
$12a^{3}b^{4}$
Work Step by Step
$(-4a^{2}b^{3})(-3ab)$
$=[(-4)\times(-3)](a^{2}\times a)(b^{3}\times b)$
$=(12)(a^{3})(b^{4})$
$=12a^{3}b^{4}$
Prealgebra (7th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321955048
ISBN 13:
978-0-32195-504-3
Chapter 10 - Section 10.2 - Integrated Review - Operations on Polynomials - Page 712: 24
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