The function f(x) has a domain of "all real numbers, x > 2" by definition.

To find the range:

• when x = 2, f(2) = 8
• when x increases from 2, f(x) becomes larger than 8

Hence, the range is "all real numbers, f(x) > 8"

Here is the graph of the function, with an open circle at (2, 8) indicating that the domain does not include x = 2 and the range does not include f(2) = 8.

The function is part of a parabola. [See more on parabola.]