College Algebra (6th Edition)

Published by Pearson
ISBN 10: 0-32178-228-3
ISBN 13: 978-0-32178-228-1

Chapter P - Prerequisites: Fundamental Concepts of Algebra - Exercise Set P.5: 50

Answer

$(x+2)^{2}$

Work Step by Step

If $a$ and $b$ are real numbers, we know that $a^{2}+2ab+b^{2}=(a+b)^{2}$. Therefore, we know that $x^{2}+4x+4=(x+2)^{2}$. In this case, $a=x$ and $b=2$.
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