Answer
$15x^4-47x^2+28$
Work Step by Step
$ (5x^2 - 4)(3x^2 - 7)$
$=15x^4-35x^2-12x^2+28$
$=15x^4-47x^2+28$
FOIL
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: 27
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