Quadratic equation
Solves ax² + bx + c = 0, including complex roots.
Algebra and number tools ↗THE SUMFIZZ LIBRARY
Algebra and number tools calculators
Explore 25 free tools for algebra and number tools. Find quadratic equation, linear equation, two-variable linear system and more. Each calculator explains its inputs and method, with examples you can try using your own numbers.
THE SUMFIZZ LIBRARY
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Linear equation
Solves ax + b = c.
Algebra and number tools ↗Two-variable linear system
Solves two linear equations.
Algebra and number tools ↗Three-variable linear system
Uses pivoted elimination.
Algebra and number tools ↗Polynomial evaluation
Evaluates a polynomial with Horner’s method.
Algebra and number tools ↗Polynomial derivative
The power rule multiplies each coefficient by its exponent and reduces that exponent by one.
Algebra and number tools ↗Polynomial integral
Integrates a polynomial term by term between the given bounds; no arbitrary integration constant enters a definite integral.
Algebra and number tools ↗Exponent calculator
Real-number power only.
Algebra and number tools ↗Nth root
Negative numbers have real roots only for odd integer root degrees.
Algebra and number tools ↗Logarithm
Both arguments must be positive and the base cannot equal one.
Algebra and number tools ↗Exponential growth and decay
This is discrete growth per period, not a continuous e-based growth rate.
Algebra and number tools ↗Doubling time
Assumes a positive constant discrete growth rate.
Algebra and number tools ↗Half-life decay
Half-life and elapsed time must use the same time unit.
Algebra and number tools ↗Arithmetic sequence
The first term is term one, not term zero.
Algebra and number tools ↗Geometric sequence
A finite geometric sequence.
Algebra and number tools ↗Factorial
Returns an exact integer using BigInt.
Algebra and number tools ↗Permutations
Ordered selections without replacement.
Algebra and number tools ↗Combinations
Unordered selections without replacement.
Algebra and number tools ↗Greatest common divisor
The greatest common divisor is non-negative.
Algebra and number tools ↗Least common multiple
LCM uses exact-safe integer inputs; results outside JavaScript’s safe range are rejected.
Algebra and number tools ↗Prime factorisation
Trial division is bounded to keep the interface responsive.
Algebra and number tools ↗Modulo and remainder
Uses a non-negative Euclidean remainder with a positive divisor, including negative dividends.
Algebra and number tools ↗Number-base converter
Supports bases 2–36 and signed integers using exact BigInt arithmetic.
Algebra and number tools ↗Matrix operations
This first version supports determinant and transpose for square matrices up to 6 × 6.
Algebra and number tools ↗Complex arithmetic
Treats inputs as a + bi and c + di.
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