find the product of the real parts of roots of equation : `Z^2-Z=5-5i`

Explanation

`z^2-z=5-5i`

`4z^2-4z=20-20i`

`4z^2-4z+1=21-20i`

`(2z-1)^2=(5-2i)^2`

`2z-1=pm(5-2i)`

`2z=1pm(5-2i)`

`2z=1+5-2i`

`2z=6-2i`

...