#### Answer

$(2x-3)(2x+3)$

#### Work Step by Step

RECALL:
A difference of two squares can be factored using the formula:
$a^2-b^2=(a-b)(a+b)$
The given binomial can be written as:
$=(2x)^2-3^2$
This binomial is a difference of two squares.
Factor the given difference of two squares using the formula above with $a=2x$ and $b=3$ to obtain:
$=(2x-3)(2x+3)$