 

Online calculator. Solving of quadratic equations.A quadratic equation is a polynomial equation of the second degree. The general form is a x ^{2} + b x + c = 0,where x represents a variable or an unknown, and a , b , and c are constants with a ≠ 0. (If a = 0, the equation is a linear equation.)
The discriminant determines the number of the roots. There are three cases:
∆ =
b ^{2}  4ac .
The roots are given by the quadratic formula
If in your quadratic equation there are subtraction signs, before corresponding coefficient in the calculator it is necessary to put a sign a minus (""). For example: x ^{2}  4x  5 = 0, coefficients 1, 4, 5.If in your quadratic equation there are less than three summand, near to an absent coefficient in the calculator it is necessary to put a zero ("0"). For example: x ^{2}  4x = 0, coefficients 1, 4, 0.
Input quadratic equation coefficients. x ^{2} +
x +
= 0
F11 Try online calculators. Solving of equations.
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