Respuesta :

21hnc01

Answer: B

Step-by-step explanation:

f(x)= x^2−36/x^3−36x or

f(x) = (x+6)(x−6)/ x(x^2−36) = (x+6)(x−6)/x(x+6) (x−6)

Discontinuities are  x=0, x=−6, x=6

f(x)= (x+6)(x−6)/x(x+6)(x−6)=1/x;x≠0