Complex Number Equations: Solving for z and Finding the Perpendicular Bisector

[King_Silver]

Here are my 3 Questions so far:
Q1 and Q3 on the images represent the 2 I asked in the OP. The Q2 is one I have done myself and I believe to be right. Is this any better?

 

[King_Silver]

Here are my 3 Questions so far:
Q1 and Q3 on the images represent the 2 I asked in the OP. The Q2 is one I have done myself and I believe to be right. Is this any better?

any help? :)