Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter 4 - Polynomials - 4.5 Multiplication of Polynomials - 4.5 Exercise Set: 30

Answer

$4a^2-28a$

Work Step by Step

Using $a(b+c)=ab+ac$ or the Distributive Property, the given expression, $ (a-7)4a $, is equivalent to \begin{array}{l}\require{cancel} 4a(a-7) \\\\= 4a(a)+4a(-7) \\\\= 4a^2-28a .\end{array}
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