2x 1 2 4x 2 0 July 8, 2019 16 32 64 128 2x 1 2 4x 2 5 0 2x y =- 1 y 2 4x 2 0 6 2x 1 6 )= 5 2 4x 0 2 1 2 2x 0 1 )= 2 4x 0 08 2cos 2 4x )- 6cos 2 2x )+ 1 0 2x 1 2 4x 2 5 0 is not a quadratic equation 2x 1 2 4x 2 1 0 tìm x X 2 2x 1 )+ 4x 2 0 Tìm x biết 2x 1 2 4x 2 1 0 3x 2 2x 1 )+ 1 4x 2 0
