Question 18422
|5 2|`````|4 3| 
|2 1| X= |1 -2| 

 The inverse of |5 2|
                |2 1| is
        |1 -2| 
        |-2 5|
 (since the inverse of }a b|   |d -b|
                       |c d| = |-c a|/(ad-bc) )

 hence X  = |1 -2|   |4 3| 
            |-2 5| * |1 -2| 
            
          = ...


 Kenny