Răspunsuri

2014-10-28T23:16:15+02:00
(2⁶⁵-2⁶³)/(2⁶⁶+2⁶⁷)=2⁶³(2²-1)/2⁶⁶(1+2)=2⁶³x3/2⁶⁶x3=2⁶³⁻⁶⁶=2⁻³=1/2³=1/8