Answer
$9x^2+30x+25$
Work Step by Step
Using $
(a+b)^2=a^2+2ab+b^2
$, then,
\begin{align*}
(3x+5)^2
\Rightarrow
(3x)^2+2(3x)(5)+(5)^2
\\=
9x^2+30x+25
.\end{align*}
Intermediate Algebra (6th Edition)
by Martin-Gay, Elayn
Published by
Pearson
ISBN 10:
0321785045
ISBN 13:
978-0-32178-504-6
Chapter 5 - Section 5.6 - Factoring Trinomials - Exercise Set - Page 304: 92
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