2 4 9x 5 6 July 8, 2019 16 32 64 128 2 4 9x 5 6 without fractions 2 5 9x 6 3x 4 1 2 4 9x 5 6 32 9x 4 =( 2 5 6 7x 5 6xy 2 và 4 9x 3y 6x 4 4x 2 9x 5 2x 3 5 6x 7 )+ 4 2 9x 9x 2 6x 4 =- 5 2 9x-6=5 4x+9 2 4/9x2/4 2 4/9 x 2 2x 9