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10. Efectuează: a) 351:349 +37¹.33+2024%; c) 328:278 +33¹-30-[36:35+3³: (3.3²-18¹)]; 223 222): 25: b) (2.5)³+4565: 965: 564 -2 100%; d) {33+ [32+ (13²-5²-5):2²]: 2²:2³. c) 5n+2+5n+1 - 50. d) 2n+2​