Question

Alguns pares ordenados de A · B são (–2, 4), (0, 5) e (–2, –4), e n(A · B) = 6. Ento, A2 é:

Answer 1

A = {-2 ,0}

A² = A x A

{(-2 ,-2);(-2 ,0);(0 ,-2);(0,0)}.