dau coroana
urgentt
![Dau Coroana Urgentt class=](https://ro-static.z-dn.net/files/da7/c31a193faf00e77892136c8a409dd0d1.jpg)
√13(1-2,73-1,9+5,27) = 1,64 x 1,71 = 2,81.
√5(2/15 - 3/10 - 1/3) = -√5 x 1/3 = -0,74