Applicare la formula: $\frac{a^m}{a^n}$$=a^{\left(m-n\right)}$, dove $a^n=8^8$, $a^m=8^9$, $a=8$, $a^m/a^n=\frac{8^9}{8^8}$, $m=9$ e $n=8$

Applicare la formula: $\frac{a^m}{a^n}$$=a^{\left(m-n\right)}$, dove $a^n=15^5$, $a^m=15^7$, $a=15$, $a^m/a^n=\frac{15^7}{15^5}$, $m=7$ e $n=5$

Applicare la formula: $a^b$$=a^b$, dove $a=15$, $b=2$ e $a^b=15^{2}$

Applicare la formula: $ab$$=ab$, dove $ab=8\cdot 225$, $a=8$ e $b=225$