5. If a polynomial function of degree 4 has 1 + i as one of Its roots, what is the maximum number of real roots can it have? 3 0 1 X -4x - 12 6. Evaluate: lim_0 X-4 O -4 0 -3 1 O 3 4 7. Given the following table of values, determine a value of a where /(x) has a local minimum. Assume that /is continuous and differentiable for all reek -6 -4 04 Ayor is solution for which differential equation? O Wy - 0