Solve any quadratic equation with the quadratic formula, step by step. Every step is labeled with the rule it uses and rendered in proper math notation, so you can follow how the answer comes together. Type in your problem to start. Free to use, no account required.
Example
x^2 − 5x + 6 = 0 → x = 3 or x = 2
Tips
Write the equation as ax² + bx + c = 0, then read off a, b and c.
The discriminant b² − 4ac tells you how many real roots there are: positive gives two, zero gives one, negative gives a complex pair.