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(a) Find the derivative of f (x) = (x2 + 9) (2x - 5) by first expanding the polynomials. Enter the fully simplified expression for f () after expanding the polynomials. f (x) = Enter the derivative of f (z). f' (z) = (b) Find the derivative of f (a) = (x2 + 9) (2x - 5) by using the product rule. Let g (x) = x2 + 9 and h(z) = 2x -5. 9' (2) = h (x) = f' (x) = (c) Are the expressions for the derivative in (a) and (b) the same? Click for List