Algebra — Equations, Expressions, and Functions
Algebra uses symbols to represent numbers so you can solve equations, rewrite expressions, and describe relationships.
Algebra is the language of unknown quantities. Use these solvers and guides to isolate variables, factor polynomials, and check your work.
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Example problems
Calculators
- Algebra Solver
- Linear Equation Solver
- Quadratic Equation Solver
- Polynomial Solver
- Factoring Calculator
- Exponent Calculator
- Logarithm Calculator
- System of Equations Solver
- Equation Solver
Guides
Formulas
Frequently asked questions
What is algebra used for?
Algebra models relationships with variables. It appears in science, finance, computer science, and almost every later math course.
What should I try first on an equation?
Simplify each side, combine like terms, then isolate the variable with inverse operations. Check by substituting your answer.