Applicare la formula: $x+a=b$$\to x=b-a$, dove $a=4x^2$, $b=8$, $x+a=b=4x^2+\sqrt[3]{y^{2}}=8$, $x=\sqrt[3]{y^{2}}$ e $x+a=4x^2+\sqrt[3]{y^{2}}$

Applicare la formula: $x^a=b$$\to \left(x^a\right)^{inverse\left(a\right)}=b^{inverse\left(a\right)}$, dove $a=\frac{2}{3}$, $b=8-4x^2$, $x^a=b=\sqrt[3]{y^{2}}=8-4x^2$, $x=y$ e $x^a=\sqrt[3]{y^{2}}$

Applicare la formula: $\left(x^a\right)^b$$=x$, dove $a=\frac{2}{3}$, $b=3$, $x^a^b=\sqrt{\left(\sqrt[3]{y^{2}}\right)^{3}}$, $x=y$ e $x^a=\sqrt[3]{y^{2}}$