Answer
$6(3x - 5) (2x + 1)^2(5x-4)$
Work Step by Step
We factor out $6(3x - 5) (2x + 1)^2$ and combine like terms as follows:
\begin{align*}
2(3x - 5) \cdot 3(2x + 1)^3& + (3x - 5)^2 \cdot 3(2x + 1)^2 \cdot 2\\
&=6(3x - 5) (2x + 1)^2[2x+1+3x-5]\\
&=6(3x - 5) (2x + 1)^2(5x-4).
\end{align*}
