C 7. Calculaţi: a) 437: (2-27¹)+(3+3-105): 106 b) 33 +3 ¹0:38-3+3-37:35 c) [3². 33 +254: 252 + (35)4: 320]: 31; d) [34⁰ : 3¹⁰ + (24)³ + 6²³ : 6¹³] : [(3³)² · (2²)³ +31¹7 - 31¹³ + (2³)′]; +2.310: (5-35+3)+9.3³; e) 10- {24²:576+3 [(32-2) ¹5: (329-2¹5) +12¹1}: 13; f) 2100 [250.248 + (210.215)5: 227 +(576: 575-3⁹0.28 +298]; g) [37-310 +2203: 2108- 5 (52)51: (3¹7 +295-5¹). 17​