Answer
$(3x+2)(2x+5)$
Work Step by Step
Grouping the first and second terms and the third and fourth terms, the given expression is equivalent to
\begin{array}{l}\require{cancel}
6x^2+4x+15x+10
\\\\=
(6x^2+4x)+(15x+10)
.\end{array}
Factoring the $GCF$ in each group results to
\begin{array}{l}\require{cancel}
2x(3x+2)+5(3x+2)
.\end{array}
Factoring the $GCF=
(3x+2)
$ of the entire expression above results to
\begin{array}{l}\require{cancel}
(3x+2)(2x+5)
.\end{array}