Polynomial long division calculator

Calculate quotient coefficients, highest degree first and remainder coefficients with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use quotient coefficients, highest degree first and remainder coefficients to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Dividend coefficients, highest degree first
1,-3,2
Divisor coefficients, highest degree first
1,-1
Reconstruction check x
3
Quotient coefficients, highest degree first
1, -2
Remainder coefficients
0
Dividend at check x
2
Reconstructed value at check x
2
Absolute reconstruction difference
0

Try another scenario

Dividend coefficients, highest degree first
1,0,0,2
Divisor coefficients, highest degree first
1,1
Reconstruction check x
3
Quotient coefficients, highest degree first
1, -1, 1
Remainder coefficients
1
Dividend at check x
29
Reconstructed value at check x
29
Absolute reconstruction difference
0
Calculation method

Calculation method

Quotient coefficients, highest degree first

Polynomial long division: eliminate the next leading dividend term using the divisor leading coefficient.

Remainder coefficients

Terms below the divisor degree left after elimination; the zero remainder is represented by 0.

Dividend at check x

Horner evaluation of the entered dividend.

Reconstructed value at check x

Quotient(x)×divisor(x)+remainder(x).

Absolute reconstruction difference

Absolute difference between the two evaluations.

Symbols and units
a
Dividend coefficients, highest degree first
b
Divisor coefficients, highest degree first
c
Reconstruction check x

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • Finite real coefficients with up to 30 coefficients in each polynomial. The divisor leading coefficient must be nonzero; coefficient outputs keep their algebraic descending order. Double-precision results are approximate. Numeric tables use 12 significant digits and display components at roundoff scale (32 machine epsilons relative to their row or relevant calculation scale) as zero; scalar diagnostics retain full precision.
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Further reading

OpenStax: polynomial long division ↗

Background reading; this does not imply endorsement or independent review of SumFizz.

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