Question

How do you find the domain and range of `f(x)=x^2−25`?

Answer 1

Domain is `x in RR`
Range is `f(x) >= -25`

Explanation:

`f(x)=x^2-25`. Domain (possible value of x) is any real number.
So domain is `x in RR`

Range (possible value of f(x)) : This is a parabola , vertex is `0, -25` and opens upwards. so minimum point is `0, -25`

So range is `f(x) >= -25` graph{x^2-25 [-80, 80, -40, 40]} [Ans]