Respostas

2014-08-02T17:46:08-03:00
AxB = ((4,2)(4,3)(4,4)(4,7)(5,2)(5,3)(5,4)(5,7)(5,2)(5,3)(5,4)(5,7)(7,2)(7,3)(7,4)(7,7));
BxA = ((2,4)(2,5)(2,5)(2,7)(3,4)(3,5)(3,5)(3,7)(4,4)(4,5)(4,5)(4,7)(7,4)(7,5)(7,5)(7,7));
AxC = ((4,0)(4,8)(4,7)(4,9)(5,0)(5,8)(5,7)(5,9)(5,0)(5,8)(5,7)(5,9)(7,0)(7,8)(7,7)(7,9));
CxB = ((0,2)(0,3)(0,4)(0,7)(8,2)(8,3)(8,4)(8,7)(7,2)(7,3)(7,4)(7,7)(9,2)(9,3)(9,4)(9,7));