Answer:
[tex] \frac{4 \sqrt{10} }{5} [/tex]
Step-by-step explanation:
[tex] \frac{8}{ \sqrt{10} } \times \frac{ \sqrt{10} }{ \sqrt{10} }[/tex]
[tex] \frac{8 \sqrt{10} }{ {\sqrt{10}}^{2} } [/tex]
[tex] \frac{8 \sqrt{10} }{10} [/tex]
[tex] \frac{4 \sqrt{10} }{5} [/tex]
