(a) Find the derivative of f(x) = (m2 + ) (2 5) by first expanding the polynomials. Enter the fully simplified expression for f () after expanding the polynomials. flz) = BE Enter the derivative of f(z). fl(z)= BE (b) Find the derivative of f(z) = (;1:2 + ) (2z 5) by using the product rule. Let g(z) = 22 + 6 and h(z) =2z -5 g (z) = 2x B h'{.-r,}: 2 BB fl(z) = BE