Respostas

2014-08-26T15:20:42-03:00
A= [1 2 ] - B= [-2 -2 ]
  = [3 0]
 = [3 4]
-------------------------------------
=  
[0 0 ]
2014-08-26T15:54:35-03:00
Resposta: a11: 1-(-2) a12:2-(-2)
                a21: 5- 0   a22: 4- 1

3  4
5  3