Math

Rational Zeros Calculator

List possible rational zeros from the leading and constant coefficients.

Parameters Live Compute
Calculated Output
Number of candidates 8
Possible rational zeros -3, -1.5, -1, -0.5, 0.5, 1, 1.5, 3
Formula: ± (factors of constant) ÷ (factors of leading)
Step-by-Step Breakdown
1. Values used:
2. Leading coefficient = 2
3. Constant term = 3
4.
5. Number of candidates = 8
6. Possible rational zeros = -3, -1.5, -1, -0.5, 0.5, 1, 1.5, 3
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The Rational Root Theorem lists every rational number that could possibly be a zero of a polynomial.

The math behind it

Any rational zero is ±p/q where p divides the constant term and q divides the leading coefficient. Test these candidates to find actual roots.

Worked Example

Leading 2, constant 3 → ±{1, 3, 1/2, 3/2}.

Frequently Asked Questions

Are all candidates actual roots?

No — they're only possibilities; substitute or use synthetic division to confirm.

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