The teacher will be very surprised to see your correct solution 😉
_____
1 \/ 3*I
z = - - + -------
2 2
z = (-1/2)+((sqrt(3*i))/2)
z = -1/2+sqrt+3*i)/2)
___ ___
1 \/ 6 I*\/ 6
z1 = - - + ----- + -------
2 4 4
z1 = -1/2 + sqrt(6)/4 + sqrt(6)*i/4
sum
___ ___ 1 \/ 6 I*\/ 6 - - + ----- + ------- 2 4 4
=
___ ___ 1 \/ 6 I*\/ 6 - - + ----- + ------- 2 4 4
product
___ ___ 1 \/ 6 I*\/ 6 - - + ----- + ------- 2 4 4
=
___ ___ 1 \/ 6 I*\/ 6 - - + ----- + ------- 2 4 4
-1/2 + sqrt(6)/4 + i*sqrt(6)/4
z1 = 0.112372435695795 + 0.612372435695794*i
z1 = 0.112372435695795 + 0.612372435695794*i