Tuesday, 25 February 2014

complex numbers - Find the roots of the polynomial? (Cardano's Method)

y3712y7216



This is part of Cardano's method, so I've gotten my first root to be:




y1=37432+i496912+37432i496912



I am at a loss on how to evaluate this. I know this is one of three real roots, but I don't know what to do now.

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