Question

Express the domain and range of g (x) = (25 + 4x − x^2 ) in interval notation (with
exact answers, no decimals).

Answer 1

Domain : (-inf, inf)

Answer 2

To know the range, you need to find the vertex first.
you know how to find vertex ?

Answer 3

use x=-b/2a

Answer 4

to find the vertex (that will give you the x value of the vertex)
then sub that x back into the function to find your y value (you need that for your range)