C. Efectuați calculele: a) (-2)³1:229- (-2)25: 412. c) 31-33: [(-2.3²)²-(-3²-2³)]; [(-3)¹¹-(-3):318-10]2017 +(-1)2018, b) 17.(173-172-16-17-16-16); d)-8--12|+|-62 +52-1-7-17 + 27; f)-1024: [-750: (-25)-(-3)³ + 7].​