4. [-/5 Points] DETAILS SCALCCC5 4.2.034.EP. MY NOTES ASK YOUR TEAC Consider the following function. h(p) = P - 5 P- + 4 Find the derivative of the function. h'(p) = Find the values of p such that h '(p) = 0. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) P Find the values of x In the domain of h such that h'(p) does not exist. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) P Find the critical numbers of the function. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.)