Algebra: A Combined Approach (4th Edition)

Published by Pearson
ISBN 10: 0321726391
ISBN 13: 978-0-32172-639-1

Chapter 5 - Section 5.5 - Multiplying Polynomials - Exercise Set - Page 379: 56


Answer: $32x^{3}-32x^{2}-26x+20$

Work Step by Step

To do: $(4x-5)(8x^{2}+2x-4)$ =$4x(8x^{2}+2x-4)-5(8x^{2}+2x-4)$ =$32x^{3}+8x^{2}-16x-40x^{2}-10x+20$ =$32x^{3}-32x^{2}-26x+20$
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