Intermediate Algebra (6th Edition)

Published by Pearson
ISBN 10: 0321785045
ISBN 13: 978-0-32178-504-6

Chapter 5 - Section 5.4 - Multiplying Polynomials - Exercise Set: 72

Answer

$18x^{3}-30x^{2}-15x+6$

Work Step by Step

$(6x^{2}+2x-1)(3x-6)$ Multiplying vertically, $-6(6x^{2}+2x-1)+3x(6x^{2}+2x-1)$ $=-36x^{2}-12x+6+18x^{3}+6x^{2}-3x$ Combine like terms. $=18x^{3}-36x^{2}+6x^{2}-3x-12x+6$ $=18x^{3}-30x^{2}-15x+6$
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