5•3*-2•3* = 81 ajutor!!!!!!!!!!!!
![5323 81 Ajutor class=](https://ro-static.z-dn.net/files/dee/144e056a818c8e82ed9b0d294d7922ea.jpg)
iei factor comun pe 3×
3×(5-2)=81
81 = 3 la puterea 4
3× x 3 = 3 la puterea 4
3³ x 3 = 3 la puterea 4