1. The problem statement, all variables and given/known data I've used z* to mean z conjugate. Given the equation z + 2iz* = 8 + 7i, express z in the form a + ib. From SQA Advanced Higher Mathematics 2005 Exam Paper 2. Relevant equations n/a 3. The attempt at a solution I substituted a+ib and its conjugate in for z and z*, which, after some rearranging, gave me z =-3-15i. I am not sure if that's the correct answer, and I'm a bit suspicious of how straightforward that method was. The question is worth 4 marks, which seems an awful lot for not much work. Have I missed something?