We give a self-contained proof that the nullity of the Bezoutian matrix associated with a pair of polynomials f and g equals the number of their common zeros counting multiplicities.
Elemente der Mathematik
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Copyright by the European Mathematical Society
This is the author’s version of the article, the published journal version can be found at doi:10.4171/EM/243. http://www.ems-ph.org/journals/show_abstract.php?issn=0013-6018&vol=69&iss=1&rank=6
Ćurgus, Branko and Dijksma, Aad, "A Proof of the Main Theorem on Bezoutians" (2014). Mathematics. Paper 71.