Math

Rational Zeros Calculator

List possible rational roots of a cubic with integer coefficients (p/q theorem).

Possible rationals

Actual rational roots

This free Rational Zeros Calculator covers List possible rational roots of a cubic with integer coefficients (p/q theorem).

Enter the Rational Zeros Calculator fields, then read the output. Math calculators on this site keep the formula visible beside the form.

Rational Zeros Calculator — how it works

List possible rational roots of a cubic with integer coefficients (p/q theorem). Typical inputs are a (x³), b (x²), c (x) and d. How it works beside the form states the identity the Rational Zeros Calculator applies.

FAQ

How do I use the Rational Zeros Calculator?

Open the Rational Zeros Calculator, fill a (x³), b (x²), c (x) and d, and read the result. Any rational root in lowest terms has numerator dividing the constant and denominator dividing the leading coefficient.

What formula does the Rational Zeros Calculator use?

The Rational Zeros Calculator uses the identity in How it works. In words: Any rational root in lowest terms has numerator dividing the constant and denominator dividing the leading coefficient.

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