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Calculaţi, folosind formula √a b = √a √b, unde a 20, b≥0: a) √4.25; c) √81.49; e) √64-225; g) √144-0,25; 9. Calculati: b) √36-9; f) √81-400; 5. d) √100.49; h) √√1,21-0,04​

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