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10. Efectuează: a) 351:348 +371. 3³+2 024⁰; c) 328:278 +3³¹-30 [36:35+3³: (3-32-18¹)]; Calcul R b) (2. 5)³ + 4565: 965: 564-2100 d) {33+ [3²+ (13²-5². 5):22​.