2x 4 )( 4x 2 8x 16 July 8, 2019 16 32 64 128 X 4 2x 3 4x 2 8x 16 0 X 4 2x 3 4x 2 8x 16 2x 4 4x 3 8x 2 16x 2x 5y 4 )( 4x 2 25y 2 10xy 20y 8x 16 X 2 )( x 4 2x 3 4x 2 8x 16 với x 3 16 2x 4 5x 3x 2 4x 8x 2 2x + y = 4