Răspunsuri

2014-05-01T11:18:04+03:00
A=8-3√7+1/2(3+√7)²
a=(8-3√7) +(9+6√7+7)/2
Amplificam prima paranteza cu 2 pentru a scapa de numitor si deaici rezulta
a=16-6√7+9+6√7+7
a=32
b=24 
Ma=(32+24 )/2=28
2014-05-01T12:39:43+03:00
a=8-37+1/2(3+7)^2
a=(8-3
7)+(9+67+7)/2   prima paranteza o amplificam cu 2
a=16-6
7+9+67+7
a=32
b=24
Ma=(32+24)/2=28