Elementary Technical Mathematics

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

Chapter 5 - Section 5.5 - Multiplication of Polynomials - Exercise - Page 225: 12


$$-48x^3-30x^2+54x . $$

Work Step by Step

By multiplying each term of the polynomial by the monomial, and then adding the products, we have $$-6x(8x^2+ 5x - 9)=-6x(8x^2)-6x( 5x)-6x( - 9)\\ =-48x^3-30x^2+54x . $$
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