![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
1 RG
a, [tex]\sqrt{27}-\sqrt{48}+\frac{1}{2-\sqrt{3}}[/tex]
b,[tex]\frac{1}{\sqrt{2}-2}-\frac{1}{\sqrt{2}+2}[/tex]
c, [tex]\sqrt{(\sqrt{2}-1)^{2}}-\sqrt{(1-\sqrt{2})^{2}}[/tex]
a, [tex]\sqrt{27}-\sqrt{48}+\frac{1}{2-\sqrt{3}}[/tex]
b,[tex]\frac{1}{\sqrt{2}-2}-\frac{1}{\sqrt{2}+2}[/tex]
c, [tex]\sqrt{(\sqrt{2}-1)^{2}}-\sqrt{(1-\sqrt{2})^{2}}[/tex]