Applicare la formula: $a+\frac{b}{c}$$=\frac{b+ac}{c}$, dove $a=a^2$, $c=a$, $a+b/c=a^2+\frac{b}{a}$ e $b/c=\frac{b}{a}$

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

Applicare la formula: $a+b$$=a+b$, dove $a=2$, $b=1$ e $a+b=2+1$

Applicare la formula: $\left(\frac{a}{b}\right)^n$$=\frac{a^n}{b^n}$, dove $a=b+a^{3}$, $b=a$ e $n=\frac{1}{2}$