4 3 9x 12 July 8, 2019 16 32 64 128 4 3 (- 9x 12 )- x 9x 3 12x 4 4x 4 12x 3 9x 2 0 23x 4 9x 3 )+ 12 2x 4 9x 3 12x 2 29x 30 3x 4 39x 3 126x 2 4 5x 3 )- 9x 11x 12 1 3 9x 12 )+ 4 13x 9x 4 =- 3 5 12x 3 3x 4 )= 9x 12 4 9x 10 x 3 12 4x 4 12x 3 9x 2 9x 4 6x 3 12x 2 1 3 9x 12 )= 2x 4