Related Post: X 1 4x 3 2 X 1 )( 4x 3 )+ 2x 2 X 4x 1 )-( 2x 3 2 =- 9 4 X 1 )+ 3 4x 2 2 X 1 )+ 4x 3 2x 1 )+ 8 X 1 3 =- 2 4 X 2 1 4x 3 5x 2 X 1 3 2x 4 X 1 3 2x 5 4 2 X 1 )- 3 4x 7