Precalculus (6th Edition) Blitzer

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

Chapter P - Section P.4 - Polynomials - Exercise Set: 80

Answer

$=x^2+4x+2xy+4y+y^2+4$

Work Step by Step

$(x + y + 2)^2$ $=(x + y + 2)(x + y + 2)$ $=x^2+xy+2x+xy+y^2+2y+2x+2y+4$ $=x^2+4x+2xy+4y+y^2+4$
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