Related Post: X 5 )( 2x 3 )= 2 X 1 X 5 3 2 X 1 X 5 )( 2x 3 )/( X 1 2 = 0 2x 5 X 3 )= 2 X 10 5 X 3 2 X 10 5 X 3 )- 2 X 1 )= 4 X 5 )( 2x 3 )+( X 1 2 3x X 1 5 X 3 2 X 12 5 2x 2 )= 3 X 1 )+ 7 5 X 3 )= 2 X 15