What is the domain of the function below?

Question

f(x) = (x + 4)^2 - 4

A. (-infinity sign, -4]

B. [-4, infinity sign)

C. [0, infinity sign)

D. (-infinity sign, infinity sign)

I believe the answer is either A or B, can someone please help me?

Answer 1

as with all polynomials, it is D

Answer 2

Thanks