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Free partial fraction decomposition calculator with steps. Decompose rational functions, solve integration by partial fractions, and get step-by-step solutions instantly. Our fraction decomposition calculator handles linear factors, repeated factors, and quadratic factors for complete algebraic decomposition.
Last updated: February 2, 2026
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Proper fraction: degree of numerator < degree of denominator
Verification: Combining fractions yields original expression ✓
For the rational function (3x + 5) / (x³ + 2x² - x - 2):
A / (x - 1) + B / (x + 2) + C / (x^2 + 1)
Our partial fractions calculator uses systematic algebraic methods to decompose rational functions into simpler fractions. The process involves factoring the denominator, setting up the partial fraction form, and solving for unknown coefficients using various algebraic techniques.
f(x)/g(x) = A₁/p₁(x) + A₂/p₂(x) + ... + Aₙ/pₙ(x)Where g(x) = p₁(x) × p₂(x) × ... × pₙ(x) is the factored form of the denominator, and A₁, A₂, ..., Aₙ are the coefficients to be determined.
Shows the breakdown of a complex fraction into simpler components
Our partial fraction decomposition calculator with steps provides comprehensive solutions for all types of rational functions. Whether you need a partial fraction expansion calculator, integration by partial fractions calculator, or partial fraction solver, our tool handles complex decompositions with detailed step-by-step explanations.
Partial fraction decomposition is based on the fundamental theorem of algebra, which states that every polynomial can be factored into linear and irreducible quadratic factors. The method allows us to express any proper rational function as a sum of simpler fractions that are easier to integrate or manipulate algebraically.
Looking for a Symbolab partial fraction alternative? Our partial fraction decomposition calculator provides the same powerful functionality as Symbolab partial fraction decomposition, Wolfram partial fraction decomposition, and other premium tools, but completely free and with enhanced educational features.
Need help with other calculus calculations? Check out our derivative calculator and quadratic formula calculator.
Get Custom Calculator for Your BusinessResult: A / (x - 1) + B / (x + 2) + C / (x^2 + 1)
This decomposition makes integration and other operations much simpler to perform.
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