1 4 7x 2 3 5 July 8, 2019 16 32 64 128 7x 2 4 1 5x 3 2 5x 3 )- 4 7x 1 )=- 88 7x 2 5x 3 )- 4 2 3x )= 1 Tìm x biết 4 7x 2 3 =- 1 5 2 5x 3 7 1 4 7x 5x 4 7x 3 5x 2 5x 1 0 3x 2 4x 4 7x 3 1 5x in standard form
