Consider (z)=z^2/3 (-3-2z)-12 and use the Second Derivative Test to address the following prompts. Determine the value and location of any local minimum of . Enter the solution in (,()) form. If multiple solutions exist, use a comma-separated list to enter the solutions.

Determine the value and location of any local maximum of . Enter the solution in (,()) form. If multiple solutions exist, use a comma-separated list to enter the solutions.