#### Answer

$4x^2+4x+1$

#### Work Step by Step

Using $(a+b)^2=a^2+2ab+b^2$ or the square of a binomial, the given expression, $
(2x+1)^2
,$ is equivalent to
\begin{array}{l}\require{cancel}
(2x)^2+2(2x)(1)+(1)^2
\\\\=
4x^2+4x+1
.\end{array}

Published by
Pearson

ISBN 10:
0-32184-874-8

ISBN 13:
978-0-32184-874-1

$4x^2+4x+1$

You can help us out by revising, improving and updating this answer.

Update this answerAfter you claim an answer you’ll have **24 hours** to send in a draft. An editor
will review the submission and either publish your submission or provide feedback.