4x 3 5 x 14 July 8, 2019 16 32 64 128 4x 3 5x 14 X y 4x 3 5 x 3y 15 9y 14 3 x 14 )+ 1 =- 4x 5 5 2 3 x )= 4x 14 4x 3 5 x đóng ngoặc 14