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Pe multimea numerelor reale se defineste legea de compozitir asociativa data de x * y = x + y -2

a) calculati 5 * (-5)
b) aratati ca legea de compozitir * este comutativa
c) calculati (-3) *(-2)*(-1)*0*1*2*3

User Crash
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1 Answer

7 votes

b) aratati ca legea de compozitir * este comutativa

User Camden
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