SOLUTION: Solve: |z| + z = 2 + i , where z is a complex no.

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Question 1117796: Solve: |z| + z = 2 + i , where z is a complex no.
Answer by ikleyn(52817) About Me  (Show Source):
You can put this solution on YOUR website!
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Solve: |z| + z = 2 + i , where z is a complex no.
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Looking into equation, you can momentarily conclude that the imaginary part of z is i; in other words, 

z = a + i, where "a" is a real nnumber.


Then |z| = sqrt%28a%5E2+%2B+1%29,  and the original equation implies for the real parts

sqrt%28a%5E2%2B1%29 + a = 2,

sqrt%28a%5E2%2B1%29 = 2 - a,   then squaring both sides

a%5E2+%2B+1 = 4+-+4a+%2B+a%5E2,

1 = 4 - 4a,

4a = 4-1 = 3  ====>  a = 3%2F4.


Answer.  z = 3%2F4+%2B+i.

Solved.