Elementary Technical Mathematics

Published by Brooks Cole
ISBN 10: 1285199197
ISBN 13: 978-1-28519-919-1

Chapter 5 - Section 5.4 - Multiplication of Monomials - Exercise - Page 223: 24


$-40\ a^7b^4 $

Work Step by Step

By multiplying the numerical coefficients and adding the powers of the variables, we get $$ (-4a^2b)(-5ab^3)(-2a^4)=-40\ a^7b^4 .$$
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