8x 3 5 6x 1 2 July 8, 2019 16 32 64 128 5 6x 3 11 )-( 3 8x 1 2 8x 3 12x 2 6x 1 tại x 25 5 8x 3 6x 2 11x 5 divided by 2x 1 8x 3 6x 2 15x 5 )/( 4x 1 8x + 1