How many real numbers are not in the domain of the function
f (x) = 1/(x-64) + 1/(x^2-64) + 1/(x^3-64)
this means that either x-64, x^2-64, or x^3-64 is 0. so x can be 64, 8, -8, or 4 for a total of 4 solutions.
+422 
