Applicare la formula: $x^a=b$$\to \left(x^a\right)^{inverse\left(a\right)}=b^{inverse\left(a\right)}$, dove $a=4$, $b=0$, $x^a=b=\left(3-x\right)^4=0$, $x=3-x$ e $x^a=\left(3-x\right)^4$

Applicare la formula: $\left(x^a\right)^b$$=x$, dove $a=4$, $b=1$, $x^a^b=\sqrt[4]{\left(3-x\right)^4}$, $x=3-x$ e $x^a=\left(3-x\right)^4$

Applicare la formula: $a^b$$=a^b$, dove $a=0$, $b=\frac{1}{4}$ e $a^b=\sqrt[4]{0}$

Applicare la formula: $x+a=b$$\to x=b-a$, dove $a=3$, $b=0$, $x+a=b=3-x=0$, $x=-x$ e $x+a=3-x$

Applicare la formula: $-x=a$$\to x=-a$, dove $a=-3$