PolynomialLCM

PolynomialLCM[poly1, poly2, …] gives the least common multiple of the polynomials.

PolynomialLCM[poly1, poly2, …, Modulus -> p] evaluates the LCM modulo the prime p.

Examples

LCM of polynomials:

PolynomialLCM[x^2 - 1, x^2 - x]
(* -x + x^2 + x^3 - x^4 *)

Simplified:

Factor[PolynomialLCM[x^2 - 1, x^2 - x]]
(* x (1 + x) (-1 + x)^2 *)

Please visit the official Wolfram Language Reference for more details.