Question 980045
 3x³ - 27
--------- (devided by)
   x-3
================
f(x) = 3(x^3-9)/(x-3)
f(x) = 3(x^3 - 9)*(x-3)^-1
f'(x) = {{{3(3x^2)*(x-3)^-1 - 3(x^3-9)*(x-3)^-2}}}