$1+\omega$

$1-\omega$

$\omega-\omega^2$

$\frac{\omega}{\omega-\omega^2}$

0

$2+i$

$-4-4 i$

$8 / 3$

$-4\left(\frac{1-i}{1+i}\right)^{226}$

$4\left(\frac{1-i}{1+i}\right)^{226}$

$\left(\frac{1-i}{1+i}\right)^{228}$

$-\left(\frac{1-i}{1+i}\right)^{228}$

the circle $x^2+y^2-3 x-2 y=0$.

the arc of the circle $x^2+y^2-3 x-2 y=0$ intercepted by the diameter $2 x+3 y-6=0$ containing the origin and excluding the points $(3,0)$ and $(0,2)$.

the arc of the circle $x^2+y^2-3 x-2 y=0$ intercepted by the diameter $2 x+3 y-6=0$ not containing the origin and excluding the points $(3,0)$ and $(0,2)$.

the circle $x^2+y^2-3 x-2 y=0$ not containing the point $(0,2)$.