annoyingpancakescant annoyingpancakescant 24-12-2022 Mathematics Answered For the polynomial function f(x) = -2x4 + 8x2 - 8, find all local and global extrema. A.) No global extrema exist. B.) The only extrema point is (0, -8). C.)The local and global extrema are: (-√2.0), (0.-8) and (√2.0). D.)No local extrema exist.