Resultant

Resultant[poly1, poly2, var] computes the resultant of two polynomials with respect to var.

Examples

Compute resultant:

Resultant[x^2 - 1, x^2 - 4, x]
(* 9 *)

Resultant of linear polynomials:

Resultant[a*x + b, c*x + d, x]
(* a d - b c *)

Please visit the official Wolfram Language Reference for more details.