# How do you multiply (5x+9)(2x-3)?

$\left(5 x + 9\right) \left(2 x - 3\right) = \left(5 \setminus \times 2\right) {x}^{2} - \left(5 \setminus \times 3\right) x + \left(9 \setminus \times 2\right) x - \left(9 \setminus \times 3\right)$
$= 10 {x}^{2} - 15 x + 18 x - 27$
$= 10 {x}^{2} + 3 x - 27$