ma ajuta cineva? Mulțumesc

M.a=
[tex] \frac{4 - \sqrt{3} + 4 + \sqrt{3} }{2} = \frac{8}{2} = 4[/tex]
M.g=
[tex] \sqrt{4 - \sqrt{3} + 4 + \sqrt{3} } = \sqrt{8} = 2 \sqrt{2} [/tex]