Applicare la formula: $\frac{a}{b}$$=\frac{a}{b}\frac{radicalfactor\left(b\right)}{radicalfactor\left(b\right)}$, dove $a=5$ e $b=\sqrt{4-\left(2x\right)^2}$

Applicare la formula: $\frac{a}{b}\frac{c}{f}$$=\frac{ac}{bf}$, dove $a=5$, $b=\sqrt{4-\left(2x\right)^2}$, $c=\sqrt{4-\left(2x\right)^2}$, $a/b=\frac{5}{\sqrt{4-\left(2x\right)^2}}$, $f=\sqrt{4-\left(2x\right)^2}$, $c/f=\frac{\sqrt{4-\left(2x\right)^2}}{\sqrt{4-\left(2x\right)^2}}$ e $a/bc/f=\frac{5}{\sqrt{4-\left(2x\right)^2}}\frac{\sqrt{4-\left(2x\right)^2}}{\sqrt{4-\left(2x\right)^2}}$

Applicare la formula: $x\cdot x$$=x^2$, dove $x=\sqrt{4-\left(2x\right)^2}$

Applicare la formula: $\left(x^a\right)^b$$=x$, dove $a=\frac{1}{2}$, $b=2$, $x^a^b=\left(\sqrt{4-\left(2x\right)^2}\right)^2$, $x=4-\left(2x\right)^2$ e $x^a=\sqrt{4-\left(2x\right)^2}$