Applicare la formula: $\frac{a}{a^n}$$=\frac{1}{a^{\left(n-1\right)}}$, dove $n=2$

Applicare la formula: $\frac{a^m}{a^n}$$=a^{\left(m-n\right)}$, dove $a^n=b^{-3}$, $a^m=b^2$, $a=b$, $a^m/a^n=\frac{3b^2}{ab^{-3}}$, $m=2$ e $n=-3$

Applicare la formula: $\left(\frac{a}{b}\right)^n$$=\left(\frac{b}{a}\right)^{\left|n\right|}$, dove $a=3b^{5}$, $b=a$ e $n=-2$

Applicare la formula: $\left(\frac{a}{b}\right)^n$$=\frac{a^n}{b^n}$, dove $b=3b^{5}$ e $n=2$