Enter the fully simplified expression for f (x) after expanding the polynomials. f (x) = 2x*3 - 18x*2+ 6x - 27 Enter the derivative of f (I). f' (I) = (b) Find the derivative of f (x) = (x2 + 3 ) (2x - 9) by using the product rule. Let g (x) = x- + 3 ar h (r) = 2x - 9. g (x) = h (x) = f' (I) = (c) Are the expressions for the derivative in (a) and (b) the same