Quadratic equations and inequalities

Calculate delta, roots, quadratic equations, and inequalities, then follow each step of the solution on a graph.

Delta and roots
Step-by-step mode
Graph of a parabola

Use the quadratic function calculator to quickly calculate delta and roots, and see each step of solving a quadratic equation.

Enter data

You can enter your own coefficients or generate an example for practice.

x² +x +

Theory and examples

Understand quadratic functions step by step

The calculator helps you calculate delta, roots, and solution intervals, while short lessons show where each step comes from. Start with the basics or go straight to the graph, formula, or roots.