FactorSquareFree

FactorSquareFree[poly] pulls out any multiple factors in a polynomial, giving a product of square-free factors.

Examples

Square-free factorization:

FactorSquareFree[x^4 - 2x^2 + 1]
(* (x^2 - 1)^2 *)

Separate repeated factors:

FactorSquareFree[(x - 1)^3 (x + 2)]
(* (x - 1)^3 (x + 2) *)

Please visit the official Wolfram Language Reference for more details.