Repete!!!!dau coroana
![Repetedau Coroana class=](https://ro-static.z-dn.net/files/dc2/076c478daf7e92806ff56e63782133a7.jpg)
un numar negativ ridicat la patrat,va avea intotdeauna rezultat pozitiv
(-2/3)^2•2/3= 4/9•2/3= 8/27