3. Calculează, folosind regula (am)" = amn: a) (5³)⁰; b) (2³) 5; e) (730)0 (495)³: (76)5; f) (34)5: (93)²; 4. Calculează, folosind regula (a b)" =a"•b" b) (39.7%) (37.77); a) 2³.5³; 5. Calculează, folosind regula (a: b)" = a":b": a) 126:66; b) 308:158; c) (130) 50, g) (213)5: (21²); d) (25)³-(2³)5: (23) 10 h) (2³)5. (4³)5: (83). c) (220.520). (410 25¹0); d) (710.510). (493.25 c) (2030:530): (430:230); d) (30¹2: 15¹2): (6¹23​