Assuming the question marks are minus signs to find max, take derivitive and test 0's and endpoints
take derivitive f'(x)=18x²-18x-108 it equal 0 at x=-2 and 3 if we make a sign chart to find the change of signs the sign changes from (+) to (-) at x=-2 and from (-) to (+) at x=3 so a reletive max at x=-2 and a reletive min at x=3
