Find two possible values of ##z## in the complex number problem

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SUMMARY

The discussion centers on solving the complex number problem defined by the equations \(x^2 + y^2 - 5x = 0\) and \(-y = 2\). The quadratic equation derived from these is \(x^2 - 5x + 4 = 0\), leading to the solutions \(z = 4 - 2i\) and \(z = 1 - 2i\). Participants express a desire for alternative solving methods beyond the simultaneous approach used, but the consensus is that the method applied is the most straightforward.

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chwala
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Homework Statement
see attached.
Relevant Equations
complex numbers
1646186250510.png
ok here i have,
##x^2+y^2-5x=0##
##-y= 2##
I end up with the quadratic equation, ##x^2-5x+4=0##

Finally giving us, ##z=4-2i## and ##z=1-2i##
 
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Looks right.
 
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chwala said:
Homework Statement:: see attached.
Relevant Equations:: complex numbers

Finally giving us s, ##z=4-2i## and ##z=1-2i##
Which is easy enough to check for yourself.
 
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Thanks Mark...I am seeking for a different way of solving this apart from simultaneous approach that I used...that's why I posted the question...yes, I can check that mate.
 
chwala said:
Thanks Mark...I am seeking for a different way of solving this apart from simultaneous approach that I used...that's why I posted the question...yes, I can check that mate.
Then you should ask for a different approach, which you haven't gotten from us yet. This wasn't clear in your original post.
 
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chwala said:
Thanks Mark...I am seeking for a different way of solving this apart from simultaneous approach that I used...that's why I posted the question...yes, I can check that mate.
What you did was the most obvious and simplest approach. If there is another way, I can't think what it might be.
 
Noted Mark...thanks for your time on this...
 

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