C

Consider an equation $x^n+b=0$, where $n$ is a positive integer and $b$ is a complex number. In the picture the points that correspond to the roots of the equation are depicted in black. Find the equation.

Which of the given complex numbers is not a root of the equation $x^6+8\mathrm{i}=0$?

The product of the number $\sqrt{\sqrt{2}+1}$ and the multiplicative inverse of $\sqrt{\sqrt{2}-1}$ is equal to:

Calculate the fourth power of the number $1-\sqrt{2}$.