Question

What are the domain and range of the function?

What value is excluded from the domain because it causes a hole in the graph of the function?

f(x)=x2−16x−4

Answer 1

`x` = - 2/7

Alternate form: - 0.285714

Explanation:

1- Substitute f ( x ) = 0

Reorder

f (
`x` ) =
`x` x 2 - 16
`x` - 4

2- Collect like terms

0 = 2
`x` - 16
`x` - 4

3- Move the variable to the left

0 = - 14
`x` - 4

4- Divide both sides

14
`x` = - 4