Răspunsuri

2014-05-17T16:10:51+03:00
2(√3/3 - 2* √2/2)( √3/2 +√2/2)=2(1/√3 - 2*  √2/2)(√3/2 +√2/2)
2(√3/3 -√2)( √3+√2 totul supra 2)=2 (√3/3 -√2)(√3+√2 totul supra 2)