Polynomial Roots
Racines de polynômes : formules (degré 2–3) et valeurs propres de la matrice compagnon.
About this tool
Find the (real and complex) roots of a polynomial.
Input forms
- Algebraic:
x^3 - 6x^2 + 11x - 6 - Coefficients high → low:
1 -6 11 -6
Methods
Quadratic and cubic by closed form; degree ≥ 4 (up to 32) via the QR-iteration eigenvalues of the companion matrix.