Finding Average of X-Intercepts in Polynomials

Consider the polynomial function given by $$f(x) = 2x^3 - 6x^2 + 4x - 8.$$

To find the x-intercepts of this function, first set $$f(x) = 0$$ and simplify the expression. After factoring, determine the x-intercepts, and calculate the average of these x-intercepts.