a fost răspuns

A=1,2,3,4,5 si B=-1,-2,-3,-4,-5 determinati a intersactat cu b, a reunit cu b si a+b​

Răspuns :

Triunghiul1ask

A={1,2,3,4,5}

B={-1,-2,-3,-4,-5}

A∩B=∅

A∪B={1,2,3,4,5,-1,-2,-3,-4,-5}

A+B={1,2,3,4,5}+{-1,-2,-3,-4,-5}=0 (deoarece sunt nr. opuse)

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