Question 1143530
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The post by Alan is NOT a solution, because it contains mistakes.



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First mistake is in its first line    " C = x + iy ---> sqrt(2)cis(45) ".   It is an <U>assumption</U>, but not an identity.


Second mistake is in its second line  " D = x - iy ---> sqrt(2)cis(315) ".   Again, it is an <U>assumption</U>, but not an identity.
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Actually, &nbsp;"the solution" &nbsp;to this equation is some &nbsp;<U>CURVE</U> &nbsp;line &nbsp;at the coordinate plane &nbsp;(x,y).