X 2 5 x 3 7 0 July 8, 2019 16 32 64 128 X 2 x 5 )( 2x 3 )( x 2 7 )= 0 25 x 3 2 12 * 5 x 2 7 0 2x 1 2 x 3 2 5 x 7 x 7 0 0 3 x 2 )= 0 4 5 x )- 4 7 X 2 5 2k x 3 7 10k )= 0 X 2 y 3 5 x ky 7 0 25 x 2 3 x 5 x 2x 7 0 5 x 2 )- 7 x 3 )+ 35 0 0 5 x 2 3 x 7 12 X 7 )( x 5 2 4x 3 )= 0 X 5 )( 2x 3 5 (- x 7 3 3x 8 2 0 4x 5 x 7 với x 2 x 3 )= 0