Applicare la formula: $\left(ab\right)^n$$=a^nb^n$

Applicare la formula: $x\cdot x^n$$=x^{\left(n+1\right)}$, dove $x^nx=4uu^{-2}v^{-4}$, $x=u$, $x^n=u^{-2}$ e $n=-2$

Applicare la formula: $x^a$$=\frac{1}{x^{\left|a\right|}}$

Applicare la formula: $\frac{a}{b}\frac{c}{f}$$=\frac{ac}{bf}$, dove $a=4$, $b=u$, $c=1$, $a/b=\frac{4}{u}$, $f=v^{4}$, $c/f=\frac{1}{v^{4}}$ e $a/bc/f=\frac{4}{u}\frac{1}{v^{4}}$