3 2x 3 x 12 July 8, 2019 16 32 64 128 3 2x 3 )+ x 12 3 2x 2 )- x 3 =- 12 2x 3 3 4 x 12 5 2x 3 )= 3 3x 12 3 2x 12 3 x )+ 27 0 3 2x 1 3 x 2 12 2x 3 3x 12 3 2x )- 12 ⋅ 3 x )+ 27 0 9 x 2 )- 3 2x 3 )= 12 3 x 3 x 3 x 3 x