Question

[AB] n [AB]
(AB) / [AB]
[AB] / (AB)

Ajutați-ma urgent va rog

Answer 1

[AB] ∩[AB]=[AB]
(AB)/[AB]=∅
[AB]/(AB)={A, B}

Answer 2

[AB] n [AB] = [AB]
(AB) \ [AB] = multime vida
[AB] \ (AB) = {A, B}