Đáp án: `2`
Giải thích các bước giải:
`\frac{\sqrt{8-4\sqrt{3}}}{\sqrt{\sqrt{6}-\sqrt{2}}}.\sqrt{\sqrt{6}+\sqrt{2}}`
`=``\frac{\sqrt{2}\sqrt{4-2\sqrt{3}}}{\sqrt{\sqrt{6}-\sqrt{2}}}.\sqrt{\sqrt{6}+\sqrt{2}}`
`=``\frac{\sqrt{2}\sqrt{(\sqrt{3}-1)^2}}{(\sqrt{\sqrt{6}\sqrt{2}))^2}.\sqrt{\sqrt{6}+\sqrt{2}}.\sqrt{\sqrt{6}-\sqrt{2}}`
`=``\frac{\sqrt{2}(\sqrt{3}-1)}{\sqrt{6}-\sqrt{2}}.\sqrt{(\sqrt{6})^2-(\sqrt{2})^2}`
`=``\frac{\sqrt{6}-\sqrt{2}}{\sqrt{6}-\sqrt{2}}.\sqrt{4}=2`
`#Snow`
