That is equivalent to:
I am thinking that you meant:
[tex] 5*\sqrt[5]{5} [/tex]
If so:
[tex] 5^1*5^(\frac{1}{5}) \, rule a^b*a^c=a^(b+c) [/tex]
[tex] 5^(1+\frac{1}{5}) [/tex]
[tex] 5^(\frac{6}{5}) [/tex]
[tex] 6.899 [/tex]
(to nearest one-thousandth)
