[tex]\\ \tt\hookrightarrow \sqrt{5^9}[/tex]
[tex]\\ \tt\hookrightarrow 5^{9\times \frac{1}{2}}[/tex]
[tex]\\ \tt\hookrightarrow 5^{\frac{9}{2}}[/tex]
#2
[tex]\\ \tt\hookrightarrow 1/3\sqrt{12}[/tex]
[tex]\\ \tt\hookrightarrow 1/3(2\sqrt{3})[/tex]
[tex]\\ \tt\hookrightarrow 2/3(3^{\frac{1}{2}})[/tex]
