Answer
$2x^2+11x+15$
Work Step by Step
Using $(a+b)(c+d)=ac+ad+bc+bd$ or the Distributive Property, the given expression, $
(2x+5)(x+3)
,$ is equivalent to
\begin{array}{l}\require{cancel}
2x(x)+2x(3)+5(x)+5(3)
\\\\=
2x^2+6x+5x+15
\\\\=
2x^2+11x+15
.\end{array}