8/√6+√2 =.......????

[tex] \frac{8}{ \sqrt{6} + \sqrt{2} } \\ = \frac{8}{ \sqrt{6} + \sqrt{2} } \times \frac{ \sqrt{6} - \sqrt{2} }{ \sqrt{6} - \sqrt{2} } \\ = \frac{8 \sqrt{6} - 8 \sqrt{2} }{6 -2} \\ = \frac{8 \sqrt{6} - 8 \sqrt{2} }{2} \\ = 4 \sqrt{6} - 4 \sqrt{2} [/tex]