SOLUTION: please find : absolute z+4z*

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Question 111092: please find : absolute z+4z*
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
I think this is what you're asking
abs%28z%2Bz%5E0%29
where z is a complex number (z=x%2Biy) and z%5E0 is its complex conjugate (z%5E0=x-iy).
The real part of z%2Bz%5E0 is : x+4x=5x.
The imaginary part of z%2Bz%5E0 is: iy-4iy=-3iy
z%2Bz%5E0=5x-3iy
abs%28z%2Bz%5E0%29=sqrt%285x%5E2%2B3y%5E2%29