Răspuns:
[tex]m_{a}=2+\sqrt{2}\\m_{g}=2+\sqrt{2}[/tex]
Explicație pas cu pas:
[tex]m_{a}=\frac{2+\sqrt{2}+2+\sqrt{2}}{2}=\frac{4+2\sqrt{2}}{2}=\frac{\not2(2+\sqrt{2})}{\not2}=\boxed{2+\sqrt{2}}[/tex]
[tex]m_{g}=\sqrt{(2+\sqrt{2})(2+\sqrt{2})}=\sqrt{(2+\sqrt{2})^{2}}=\boxed{2+\sqrt{2}}[/tex]
