Answer
$4x^2+4x+4xy+2y+y^2+1$
Work Step by Step
$ (2x + y + 1)^2$
$=(2x + y + 1)(2x + y + 1)$
$=4x^2+2xy+2x+2xy+y^2+y+2x + y + 1$
$=4x^2+4x+4xy+2y+y^2+1$
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: 81
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