Algebra · free · no sign-up
Algebra calculator
Solve an algebraic expression for x and see its graph, including the roots where the expression equals zero.
Algebra calculatorAlgebra
Universal Algebraic Solution Engine
About the Algebra calculator
Solve an algebraic expression for x and see its graph, including the roots where the expression equals zero.
How to use the Algebra calculator
- Type the Expression / Function, for example
x^2 - 4. - Set the range in Plot Range (±X).
- Press Solve & Visualize to see the solutions and the graph.
Formula and method
The calculator finds the values of x that make the expression equal to zero, which are the points where its graph crosses the x-axis.
Worked example
For x² − 4 the solutions are x = 2 and x = −2.
Tips
- Use ^ for powers and * for multiplication.
- To solve an equation like x² = 9, rewrite it as x² − 9 = 0.
Frequently asked questions
Can it solve equations with more than one variable?
No. It solves for x in single-variable expressions.