Applicare la formula: $x+a\leq b$$=x\leq b-a$, dove $a=-16$, $b=-39$ e $x=x^2$

Applicare la formula: $a+b$$=a+b$, dove $a=16$, $b=-39$ e $a+b=-39+16$

Applicare la formula: $x^a\leq b$$=\left(x^a\right)^{\frac{1}{a}}\leq b^{\frac{1}{a}}$, dove $a=2$ e $b=-23$

Applicare la formula: $a^n$$=\left(-a\right)^ni$, dove $a^n=\sqrt{-23}$, $a=-23$ e $n=\frac{1}{2}$

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