Question

Question #87d49

Answer 1

`2` and `6`

Explanation:

`f'(x) = (2x(x-4)-(x^2-12)(1))/(x-4)^2`

`= (x^2-8x+12)/(x-4)^2`

`f'` exists for all `x` in the domain of `f` and

`f'(x) = 0` at `2` and at `6`