Applicare la formula: $\frac{a^m}{a^n}$$=a^{\left(m-n\right)}$, dove $a^n=10^5$, $a^m=10^8$, $a=10$, $a^m/a^n=\frac{10^8}{10^5}$, $m=8$ e $n=5$

Simplify $\left(10^{3}\right)^{-1}$ using the power of a power property: $\left(a^m\right)^n=a^{m\cdot n}$. In the expression, $m$ equals $3$ and $n$ equals $-1$

Applicare la formula: $ab$$=ab$, dove $ab=3\cdot -1$, $a=3$ e $b=-1$