20. [0.5/1 Points] DETAILS PREVIOUS ANSWERS MY NOTES PRACTICE AN Math 110 Course Resources Curve Sketching Course Packet on critical points Curve Sketching Course Packet on classifying critical points using the first derivative test Determine the x-coordinates of the relative extrema of the function g(x) = x4 - 8x3 - 54x2 + 4. Enter each answer as a comma-separated list of values. The order of the values does not matter. Enter DNE if g(x) does not have any relative maximum or minimum values, respectively. x-coordinates of the relative maxima = 0 x-coordinates of the relative minima = X Submit