Answer:
[tex](3x+2)(3x-2)[/tex]
Step-by-step explanation:
we know that
A binomial is a Difference of Squares if both terms are perfect squares
we have
[tex]9x^{2} -4[/tex]
so
[tex]9x^{2}=(3x)^{2}[/tex] ---> is a perfect square
[tex]4=(2)^2[/tex] ----> is a perfect square
Both terms are perfect squares
The difference of squares is
[tex]9x^{2} -4=(3x+2)(3x-2)[/tex] ----> by difference of squares
