Answer
$16x^4-625$
Work Step by Step
Use the formula $(A+B)(A-B)=A^2-B^2$ to evaluate the product as
$(2x+5)(2x-5)(4x^2+25)=(4x^2-25)(4x^2+25)=16x^4-625$
Precalculus (6th Edition) Blitzer
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13446-914-3
ISBN 13:
978-0-13446-914-0
Chapter P - Section P.4 - Polynomials - Exercise Set - Page 56: 87
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