Factoring Calculator
Enter a polynomial in x. The calculator pulls out the GCD of the coefficients, then uses the rational-root theorem to peel off linear factors (qx − p) one at a time. The output combines those factors with any leftover irreducible part of the polynomial.
Frequently asked questions
Which polynomials can it factor?
Polynomials with integer (or convertible-to-integer) coefficients. Linear factors over the rationals are found via the rational-root theorem; any irreducible quadratic or higher remainder is left as a single factor.
Does it work for high-degree polynomials?
Yes, in principle. The rational-root search runs over divisors of the constant term and the leading coefficient, so the cost grows with their size.
What if there are no rational roots?
The polynomial is irreducible over the rationals and is returned unchanged. Use the Quadratic Equation Solver for irrational or complex roots.