- #1

thereddevils

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## Homework Statement

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.

## Homework Equations

## 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