[tex]m.g.=\sqrt{x*y}[/tex]
[tex]m.g.=\sqrt{(4-2\sqrt{3})(4+2\sqrt{3})}[/tex]
[tex]m.g.=\sqrt{4^{2}-(2\sqrt{3})^{2}}[/tex]
[tex]m.g.=\sqrt{16-12}[/tex]
[tex]m.g.=\sqrt{4}[/tex]
[tex]\boxed{m.g.=2}[/tex]
OBS!!!
[tex]\boxed{(x-y)(x+y)=x^{2}-y^{2}}[/tex]
