X 4 3 5x 2 3 6 0 July 8, 2019 16 32 64 128 X 4 x 3 5x 2 3x 6 0 X 4 2x 3 5x 2 4x 6 0 3 ∉ x 4 5x 3 2x 2 112x 6 0
