Question

The domain of the function f(x) = x^2-4 is ?

Answer 1

all real x

Answer 2

how?
is this because the domain of all quadratic fnx is always all real numbers??

Answer 3

its always defined

Answer 4

you never divide by zero , take never sqrt or take log of a negative

Answer 5

if it asked for the range then the answer would be y>=-4

Answer 6

but it didnt asked for range ( though I think you may have made a mistake and asked the wrong question )