Answer
$2y^{2}(y+7)^{2}$
Work Step by Step
$ 2y^{4}+28y^{3}+98y^{2}\qquad$...factor out the GCF, $2y^{2}$.
$=2y^{2}(y^{2}+14y+49)\qquad$...recognize a perfect square trinomial.
$(A\pm B)^{2}=A^{2}\pm 2AB+B^{2}$; $A=y,\ B=7$
$=2y^{2}(y+7)^{2}$
Introductory Algebra for College Students (7th Edition)
by Blitzer, Robert F.
Published by
Pearson
ISBN 10:
0-13417-805-X
ISBN 13:
978-0-13417-805-9
Chapter 6 - Section 6.5 - A General Factoring Strategy - Exercise Set - Page 462: 36
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