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Calculează: a) 345: (344+344 +344) + 230: (229 +229); b) (238: 2104623: 613): [210.3104 (2¹4)]; C c) 5²: (5¹)²+(16 423: (8³) +206: 106 [19-9 (57): (5')']): 112; d) 366: (245: 2¹5: 34 + 917; (32)16. [102:5-(326 28-419)-51).


DAU COROANA, AJUTOR PLSSS​