2x x 1 9 6 July 8, 2019 16 32 64 128 2x 3x 1 )+( x 9 )( 5x 6 2x 1 x 2 =( 2x 1 )( 6x 9 2x 6x 2 9 1 x 3x 2x x 1 )= x 9 lớp 6 2x 9 6x x 1 2x 1 9 or x 4 6 X 1 6 2x 9 8 =- 7 24 9 2x 1 3 x 1 6 0 3 2x 5 )= 6 x 1 )- 9 2x 9 8 x 1 6 =- x 12 9 x 1 3 2x 648 2x 6x 9 1 x 3x 2x 1 6 3 x 9 2x 6x 2 9 1 x 3x simplified 4 5 * x 1 6 9 2 2x