#### Answer

$4x^2+4x+1$

#### Work Step by Step

Expand the square and multiply the two terms together using polynomial multiplication rules and FOIL (First, Outside, Inner, Last).
$(2x+1)^2=(2x+1)(2x+1)=4x^2+2x+2x+1=4x^2+4x+1$

Published by
Pearson

ISBN 10:
0321726391

ISBN 13:
978-0-32172-639-1

$4x^2+4x+1$

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