How could you use Descartes' rule to predict the number of complex roots to a polynomial as well as find the number of possible positive and negative real roots to a polynomial?

Question

anonymous · Answer

I need someone to explain this to me, because I don't understand.

anonymous · Answer

You would first use the rational root theorem to find the possible real roots, then you take out every real root that works, what is must be the imaginary roots.

anonymous · Answer

What is left* must be the imaginary roots.

anonymous · Answer

If you me a problem I might be able to explain it better

anonymous · Answer

Okay, thank you @joseknight