Answer:
The x-intercepts of the quadratic function are 8 and -4.
Explanation:
The given function is

Equate the function f(x) equal to 0, to find the x-intercepts of the quadratic function.


The middle term can be written as -8x+4x.


Take out the common factors.

Using zero product property,


Therefore the x-intercepts of the quadratic function are 8 and -4.