[tex]( { \sqrt{5} )}^{ - 3} = \frac{1}{ { \sqrt{5} }^{3} } = \frac{1}{5 \sqrt{5} } = \frac{ \sqrt{5} }{25} [/tex]
[tex](\sqrt{5})^{-3}=\frac{1}{(\sqrt{5})^{3}}=\frac{1}{5\sqrt{5}}=\frac{\sqrt{5}}{25}.[/tex]
@robertinnifd
