5-6 need help asap !

to find the following: (8 pts) 5. Use f(x) = x . (6 - x)3 and f' (x) = =5x+18 3 ( 6 -x) 3 a. Find the critical numbers of f (x) b. Find any absolute extrema on the interval [0, 10] 6. Given that f (x) = x . e2x, f' (x) = 2xe2x + e2x, and f"(x) = 4xe2x + 4e2x, find the following: (15 pts) Find the critical values of f (x) b. State the intervals of increase and decrease for f (x) c. Give the exact coordinates of any local extrema d. Using exact values, state the intervals of concavity e. Using exact values, state the exact coordinates of any inflection points