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

$9 {x}^{2} - 4$
$\left(3 x - 2\right) \left(3 x + 2\right)$
$9 {x}^{2} + 6 c - 6 c - 4$
$9 {x}^{2} - 4$