Applicare la formula: $a^b$$=a^b$, dove $a=5$, $b=3$ e $a^b=5^3$

Applicare la formula: $a^b$$=a^b$, dove $a=3$, $b=2$ e $a^b=3^2$

Applicare la formula: $ab$$=ab$, dove $ab=125\cdot 81x^{15}$, $a=125$ e $b=81$

Applicare la formula: $\frac{a^m}{a^n}$$=a^{\left(m-n\right)}$, dove $a^n=x^{15}$, $a^m=x^{20}$, $a=x$, $a^m/a^n=\frac{9x^{20}}{10125x^{15}}$, $m=20$ e $n=15$

Applicare la formula: $\frac{ab}{c}$$=\frac{a}{c}b$, dove $ab=9x^{5}$, $a=9$, $b=x^{5}$, $c=10125$ e $ab/c=\frac{9x^{5}}{10125}$