2 68 x 4 July 8, 2019 16 32 64 128 4x 2 x 68 0 68 2 x 4 )=- 12 X 2 68 =- 4x 2 x 9 )- 4 68 3x 2 x 4 )= 68 43 1 2 x 68 shower door 68 2 x 4 )=- 12.3 25 68 ( x 2 )= 6 42 2 x 8 68 − 4 x Tìm x biết 68 2 x 4