Precalculus (6th Edition) Blitzer

Published by Pearson
ISBN 10: 0-13446-914-3
ISBN 13: 978-0-13446-914-0

Chapter P - Review Exercises - Page 143: 77

Answer

$16x^2-25$

Work Step by Step

$(4x+5)(4x-5)=(4x)(4x)+(4x)(-5)+(5)(4x)+(5)(-5)=16x^2-20x+20x-25=16x^2-25$
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