Applicare la formula: $ab$$=ab$, dove $ab=5\cdot -3.99$, $a=5$ e $b=-3.99$

Applicare la formula: $a+b$$=a+b$, dove $a=-19.950000000000003$, $b=-4$ e $a+b={\left(-3.99\right)}^2-19.95-4$

Applicare la formula: $a^b$$=a^b$, dove $a=-3.99$, $b=2$ e $a^b={\left(-3.99\right)}^2$

Applicare la formula: $a+b$$=a+b$, dove $a=15.9201$, $b=-23.950000000000003$ e $a+b=15.9201-23.95$

Applicare la formula: $a^b$$=a^b$, dove $a=-8.0299$, $b=\frac{1}{3}$ e $a^b=\sqrt[3]{-8.0299}$