Applicare la formula: $x\cdot x^n$$=x^{\left(n+1\right)}$, dove $x^nx=lt^{-2}ml^{-3}$, $x=l$, $x^n=l^{-3}$ e $n=-3$

Applicare la formula: $a+b$$=a+b$, dove $a=-3$, $b=1$ e $a+b=-3+1$

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

Applicare la formula: $\frac{a^m}{a^n}$$=a^{\left(m-n\right)}$, dove $a^n=t^{-2}$, $a^m=t^{-1}$, $a=t$, $a^m/a^n=\frac{l^{4}t^{-1}}{t^{-2}m}$, $m=-1$ e $n=-2$