Răspunsuri

2014-10-20T15:13:29+03:00
2¹⁹⁹⁷-2¹⁹⁹⁶=2¹⁹⁹⁶(2¹-2°)=2¹⁹⁹⁶(2-1)=2¹⁹⁹⁶