Quadratic Equation Calculator

Quadratic Equation Calculator

To calculate the roots of a second degree function, begin by putting this equation into canonical form. After this step, insert the coefficients of the terms of the equation into the corresponding boxes. Thus, in addition to getting to know the roots, you will also be able to visualize the resolution step by step, made through the quadratic formula.

Solve a (complete) quadratic equation

Example: Find the zeros (roots) of the equation `x^2 + 2x - 15 = 0`

a: b: c:   

Note: If you want to perform calculations where the coefficient is a fraction, you must enter the number in decimal form. For example, instead of `1 / 4` you should set `0.25`.

Step-by-step resolution of the quadratic equation


Bloco de notas

Any quadratic equation can have: 2 solutions, if the discriminant (number inside the root) is greater than zero; one solution, if the discriminant is zero; no solution, if the discriminant is negative. If we are working in the universe of complex numbers, then the second-degree equation always has at least one solution.