Evaluate a polynomial at a point

Evaluate P(x) from highest-degree coefficients at a given x.

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You can still read how Evaluate a polynomial at a point works, the formula, examples, and FAQs below.

Inputs

Coefficients (high → low degree)e.g. 1, -2, 1 for x² − 2x + 1

x value

Results update when you click Calculate.

P(3.0000)

4.000000

Degree 2 polynomial evaluated at x = 3.0000

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Evaluate P(x) from highest-degree coefficients at a given x. Horner-style evaluation: sum of coefficient × x^power for each term.

Horner-style evaluation: sum of coefficient × x^power for each term.

x² − 2x + 1 at x = 3 → 4.

Order?+

List coefficients from highest degree to constant term.