![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
![](https://blog.hocmai.vn/wp-content/uploads/2017/07/hot.gif)
tính nhờ giải rõ ra giúp em ạ
[tex]\dpi{300} \bg_black \sqrt{15-6\sqrt{6}}[/tex] + [tex]\dpi{300} \bg_black \sqrt{35-12\sqrt{6}}[/tex]
[tex]\dpi{300} \bg_black \sqrt{15-6\sqrt{6}}[/tex] + [tex]\dpi{300} \bg_black \sqrt{35-12\sqrt{6}}[/tex]