Respuesta :

gmany

Answer:

(2)

Step-by-step explanation:

Because

[tex]x^2-16=x^2-4^2=(x-4)(x+4)[/tex]  not  [tex]=(x-4)(x-4)[/tex]

This follows from the formula [tex]a^2-b^2=(a-b)(a+b)[/tex]