Answer
$28a^5b^6$
Work Step by Step
$(7ab)(4a^4b^5)=(7\times4)(a\times a^4)(b\times b^5)=28(a^{1+4})(b^{1+5})=28a^5b^6$
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 - Multiplication Properties of Exponents - Exercise Set - Page 710: 15
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