I don't now
sorry
...................
nha
\(\frac{\sqrt{4+2\sqrt{3}}+2}{4+2\sqrt{3}-2\sqrt{4+2\sqrt{3}}}\)
\(=\frac{\sqrt{\left(\sqrt{3}+1\right)^2}+2}{4+2\sqrt{3}-2\sqrt{\left(\sqrt{3}+1\right)^2}}\)
\(=\frac{\sqrt{3}+1+2}{4+2\sqrt{3}-2\left(\sqrt{3}+1\right)}\)
\(=\frac{\sqrt{3}+3}{4+2\sqrt{3}-2\sqrt{3}-2}\)
\(=\frac{\sqrt{3}+3}{2}\)