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Calculați 2din2/5+3din3/5,1/5•3/2,(-2/3)la puterea2

Răspuns :

2din2/5+3din3/5 = 2•2/5 + 3•3/5 = 4/5 + 9/5 = 13/5

1/5•3/2 = 1•3/5•2 = 3/10

(-2/3)la puterea2 = 4/9