How many real and complex roots does #3x^4+4x^3+x-1 = 0# have?
1 Answer
Jul 6, 2016
It has one positive Real root, one negative Real root and a Complex conjugate pair of non-Real roots.
Explanation:
Use Descartes' Rule of Signs.
The signs of the coefficients of
The signs of the coefficients of
Using the Fundamental Theorem of Algebra we know that