## Precalculus: Concepts Through Functions, A Unit Circle Approach to Trigonometry (3rd Edition)

$2x(3x+5).$
We factor out $2x$ and combine like terms as follows: \begin{align*} 2x(2x + 5) + x^2 \cdot 2&= 2x(2x+5+x)\\ &=2x(3x+5). \end{align*}