Răspunsuri

2014-08-23T13:15:15+03:00
Ma=(a+b)/2=  (3 +√7 +3-√7)/2=  6/2=3

mg=√ab = √(5-√9)(5+√9)=  √(5-3)(5+3)=  √2*8=  √16=4
ma=(a+b)supra 2 = 3√7+3√7 supra2 = 6 supra2 =3 !!