Algebra: A Combined Approach (4th Edition)

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

Chapter 5 - Section 5.6 - Integrated Review - Exponents and Operations on Polynomials - Page 391: 34

Answer

$20x^2+21x-5$

Work Step by Step

Using the FOIL method: $(5x-1)(4x+5)=20x^2+25x-4x-5=20x^2+21x-5$
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