resultant
polynomial expression of the coefficients of two polynomials, which is equal to zero if and only if the polynomials have a common root
en-US/ɹiˈzʌltənt/
en-GB/ɹɪˈsʌltənt/
polynomial expression of the coefficients of two polynomials, which is equal to zero if and only if the polynomials have a common root