Find All X-Intercepts of the Function $$f ( x ) = x - 128 - 8 \sqrt { x }$$

Find all x-intercepts of the function.
- $$f ( x ) = x - 128 - 8 \sqrt { x }$$

A) (256, 0)
B) (192, 0)
C) (512, 0)
D) (128, 0)