KnowraPolynomial rootLinked fromLinked fromThe 17 pages that link to Polynomial root, each with the reason it gives.All 17Broader topic 4Related 10Narrower topic 3Intermediate value theoremBroader topic: A sign change across an interval guarantees a real polynomial root when the polynomial is continuous.Argument principleBroader topic: Choosing contours around regions of the plane lets the principle count roots there.Bolzano's theoremBroader topic: For real polynomials, endpoint sign changes certify a real root between the endpoints.Schinzel's theoremBroader topic: The theorem asserts that reduced polynomials have roots for infinitely many prime moduli.