Explicație pas cu pas:
A × B ={(-2,-2), (-2,5), (0,-2), (0,5), (1,-2), (1,5), (3,-2), (3,5)}
B × A = { (-2,-2), (-2,0), (-2,1), (-2,3), (5,-2), (5,0), (5,1), (5,3)}
A × A = { (-2,-2), (-2,0), (-2,1), (-2,3), (0,-2), (0,0), (0,1), (0,3), (1,-2), (1,0), (1,1), (1,3), (3,-2), (3,0), (3,1), (3,3)}
B × B = {(-2,-2), (-2,5), (5,-2), (5,5)}