Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

Published by Pearson
ISBN 10: 0-32184-874-8
ISBN 13: 978-0-32184-874-1

Chapter R - Elementary Algebra Review - R.4 Polynomials - R.4 Exercise Set: 59

Answer

$x^2+2xy+y^2$

Work Step by Step

Using $(a+b)^2=a^2+2ab+b^2$ or the square of a binomial, the given expression, $ (x+y)^2 ,$ is equivalent to \begin{array}{l}\require{cancel} (x)^2+2(x)(y)+(y)^2 \\\\= x^2+2xy+y^2 .\end{array}
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