# What is the product of (2x+3) and (2x -3)?

Jun 20, 2018

$\left(2 x + 3\right) \left(2 x - 3\right)$

This is a case of a law

$\left(a - b\right) \left(a + b\right) = {a}^{2} - {b}^{2}$

Here,
$2 x = a$
$3 = b$

Apply
${\left(2 x\right)}^{2} - {3}^{2}$

$4 {x}^{2} - 9$