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fie multimea A={-2,+4,-6,-(-2),-9,10,-(+7)} Determinati multimile:
a)A U Z(reunit)
b)A intersectat cu N
c)A-N
d)N-A
variante de raspuns:
1)Z
2){-2,-6,-(+7),-9}
3){+4,-(-2),10}
4)N
5) N-{4,-(-2),10}


Răspuns :