Respuesta :

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

Expand,

= 9[tex] x^{2} [/tex] - 6x + 6x - 4

Combine like terms, 

= 9[tex] x^{2} [/tex] - 4

Therefore, your answer is C!

Hope this helped!
The correct answer is C (9x^2-4