(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

If one of the roots of the quadratic equation, ax^2+bx+c=0 is m+ni, show that the other root is m-ni.

2. Relevant equations

3. The attempt at a solution

How do i actually show this? I mean it's a well known fact and a direct outcome of the quadratic formula. Is this valid?

(x-(m+ni))(x-(m-ni))=0

then x-2m+m^2+n^2=0

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# Homework Help: Quadratic equation

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