5x 2 5 4x 3 4 July 8, 2019 16 32 64 128 4x 3 5x 2 4x 5 0 4x 3 5x 2 4x 5 Giải bất phương trình 5x 2 5 4x 3 4 2 (- 5x 4 )+ 4x 5 =- 3 solve for x Multiply 5x 2 3 4x 5 4x 5x 3 4x 2 3x 5 4x 3 4x 2 5 1 3 4 5x 5 x 5 x 5 x 5 x 5