Quadratic equation calculator

Quadratic equations Equazioni di secondo grado quations du second degr المعادلات التربيعية द्विघातीय समीकरण 二次方程 Kwadratische vergelijkingen Ecuaciones cuadráticas Equaes quadrticas

Enter the equation you want to solve.

Instead of x, you can also write x^2.





Solve with the p,q-formula:


Or enter in here:
x2+ x+ =0





Solve with the quadratic formula:


Or enter in here:
x2+ x+ =0



This calculator solves quadratic equations by completing the square, This is a number you may add on both sides. Then you can use the binomial formula. A quadratic equation is an equation with a variable that may appear as square, i.e. in the form x.

Quadratic equations are solved by using the first or second binomial formula. Simply add a number, then use the binomial formula ""backwards"" (this technique is called completing the square).

Another technique is: use the general solution for quadratic equations of the kind x+px+q. The p,q-formula gives those solutions.

Quadratic equations

Mathepower can solve quadratic equations step-by-step and for free. They can be solved by completing the square, the p,q-formula or the quadratic formula.