Question

Qual a 2 por favor me ajuda

Answer 1

Resposta:

a) A . B = {(3, -2), (5, -2)}

b) A. C = {(3, 0), (3, -4), (5, 0), (5, -4)}

c) C . B = {(0, -2), (-4, -2)}

d) B . B = {(-2, -2)}