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

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The discussion revolves around solving the complex number problem defined by the equations x² + y² - 5x = 0 and -y = 2. The quadratic equation derived is x² - 5x + 4 = 0, leading to the solutions z = 4 - 2i and z = 1 - 2i. One participant expresses a desire for alternative methods to solve the problem beyond the simultaneous approach used. However, others note that the method applied is straightforward and the simplest known approach. The conversation highlights the challenge of finding different solving techniques for this specific problem.
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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