LogoPractical Web Tools

Free Forever

All our tools are completely free to use. No account required, No hidden fees and No subscriptions.

Fast & Secure

All processing happens in your browser. Your files never leave your device.

No File Size Limits

Convert files of any size. No restrictions on file sizes or number of conversions.

Batch Processing

Convert multiple files at once to save time and effort.

File Converters

  • PDF Tools
  • Image Converter
  • Video Converter
  • Audio Converter
  • Document Converter
  • eBook Converter
  • Archive Tools
  • File Tools

Calculators

  • Finance Calculators
  • Health Calculators
  • Math Calculators
  • Science Calculators
  • Other Tools

Popular Tools

  • PDF to Word
  • HEIC to JPG
  • Merge PDF
  • Fillable PDF Creator
  • Mortgage Calculator
  • BMI Calculator
  • AI Chat

Company

  • About Us
  • Blog
  • Contact
  • Request a Tool

Legal

  • Privacy Policy
  • Terms of Service
Email Support
Practical Web Tools Logo
Practical Web Tools

Free Tools — Your Files Never Leave Your Device

Practical Web Tools - Convert files & chat with AI — fully offline | Product Hunt

© 2026 Opal Emporium LLC. All rights reserved.

Privacy-first file conversion and AI chat. No accounts, no uploads, no tracking.

  1. Home
  2. Math Calculators
  3. Factoring Calculator

Factoring Calculator

Factor polynomials with step-by-step solutions. Supports GCF, difference of squares, trinomials, grouping, and sum/difference of cubes.

Formula:ax² + bx + c = a(x - r₁)(x - r₂)

Enter Expression

f(x)

Factoring Practice Problems

Test your skills with practice problems

Practice with 5 problems to test your understanding.

Try These Examples

What is Factoring?

Factoring is the process of breaking down a polynomial into a product of simpler polynomials. It is the reverse of expanding (multiplying). Factoring is essential for solving equations, simplifying expressions, and understanding polynomial behavior.

Factoring converts a polynomial into a product of simpler factors. Use our free calculator to factor any polynomial instantly with step-by-step solutions. Simply enter expressions like x^2 - 9, x^2 + 5x + 6, or 2x^2 - 8 and get the factored form with detailed explanations.

Key Factoring Rules

  • •GCF Factoring: Always check for a greatest common factor first
  • •Difference of Squares: a² - b² = (a + b)(a - b)
  • •Perfect Square Trinomial: a² ± 2ab + b² = (a ± b)²
  • •Trinomial: x² + bx + c = (x + p)(x + q) where pq = c and p + q = b
  • •Sum of Cubes: a³ + b³ = (a + b)(a² - ab + b²)
  • •Difference of Cubes: a³ - b³ = (a - b)(a² + ab + b²)
  • •Some polynomials are prime (cannot be factored over integers)
  • •Always verify by multiplying factors back together

Frequently Asked Questions

How do I factor x² - 9?
This is a difference of squares: x² - 9 = x² - 3² = (x + 3)(x - 3). The formula a² - b² = (a + b)(a - b) applies whenever you have a perfect square minus another perfect square.
How do I factor x² + 5x + 6?
This is a trinomial. Find two numbers that multiply to 6 (the constant) and add to 5 (the coefficient of x). Those numbers are 2 and 3, so x² + 5x + 6 = (x + 2)(x + 3).
Why can't I factor x² + 1?
x² + 1 is prime over the real numbers because there are no two real numbers that multiply to give 1 and add to give 0. It can only be factored using complex numbers: (x + i)(x - i).
What is the AC method?
The AC method is used for trinomials ax² + bx + c where a ≠ 1. Multiply a and c, find two numbers that multiply to ac and add to b, then use grouping to factor.

Related Math Tools

Explore similar calculators

Circle Calculator

Area, circumference, radius

Triangle Calculator

Area, perimeter, angles

Rectangle Calculator

Area and perimeter

Square Calculator

Area and perimeter

Sphere Calculator

Volume and surface area

Cylinder Calculator

Volume and surface area

View all math calculators