X 3 4x 2 1 4x 1 July 8, 2019 16 32 64 128 X 3 4x 2 1 4x 1 0 3 4x 1 )-( 4x 1 )= 2 x 5 4x 3 4x 2 x 1 divided by 2x 1 3x 2 3 4x 1 )-( x 2 1 4x Tìm x biết x 3 4x 2 1 4x 1 0
