If f (x) = x^2 - 1 and g (x) = 2x - 3, what is the domain of (fog) (x) ? (-infinity, infinity) [-1, infinity) [-5, infinity) (infinity,-infinity)

Question

Mathematics

Hadassah Murillo

31 July, 16:04

If f (x) = x^2 - 1 and g (x) = 2x - 3, what is the domain of (fog) (x) ? (-infinity, infinity) [-1, infinity) [-5, infinity) (infinity,-infinity)

+2

Answers (2)

Know the Answer?

Javier Clark · Answer 1

(-5, infinity)

Step-by-step explanation:

i did this one like two days ago and got it right

Wilkerson · Answer 2

f (x) = x^2 - 1 and g (x) = 2x - 3

(fog) (x) = (2x-3) ^2 - 1

(fog) (x) = 4x^2 - 12x + 8

The domain is the x value, which can be any real number, so the domain is:

(-infinity, infinity)