Applicare la formula: $a^b$$=a^b$, dove $a=9$, $b=\frac{1}{2}$ e $a^b=\sqrt{9}$

Applicare la formula: $\frac{a}{b}\frac{c}{f}$$=\frac{ac}{bf}$, dove $a=5$, $b=\sqrt{2}$, $c=3$, $a/b=\frac{5}{\sqrt{2}}$, $f=x+8$, $c/f=\frac{3}{x+8}$ e $a/bc/f=\frac{5}{\sqrt{2}}\frac{3}{x+8}$

Applicare la formula: $ab$$=ab$, dove $ab=5\cdot 3$, $a=5$ e $b=3$