How to use the Equation Solver in a few steps
The Equation Solver returns everything about a quadratic in seconds. Follow these steps:
Step 1: Enter the coefficient a
Start with the a value from your equation ax² + bx + c = 0. Remember that a must not be zero — with a = 0 the equation is no longer quadratic.
Step 2: Enter coefficients b and c
Type the b and c values into their fields. Negatives are fine, so an equation like x² − 5x + 6 = 0 has a = 1, b = −5, c = 6.
Step 3: Read roots, vertex, and chart
Press Solve. The tool returns the real roots (if any), the vertex and axis of symmetry, and a parabola chart so you can visualize the curve.
What you need to get started
Only a modern browser such as Chrome, Firefox, Safari, or Edge. There's no installation and no signup — enter three numbers and read the full solution.
Verdict
With the Equation Solver you get roots, vertex, axis, and a chart in one step — everything needed to fully understand a quadratic.