Online calculator. Quadratic equation solver.
This online calculator will help you to solve quadratic equation.
Using this online calculator, you will receive a detailed step-by-step solution to your problem, which will help you understand the algorithm how to solve quadratic equation.
Quadratic equation solver
Guide how to enter data into the quadratic equation solver
If a quadratic equation has a subtraction, then enter negative numbers.
For example, a quadratic equation x2 - x - 5 = 0, is written as:
If there is no some coefficient in the quadratic equation then you must enter a zero ("0").
For example, a quadratic equation: x2 - 4x = 0, is written as:
Additional features of the quadratic equation solver
- You can navigate between the input fields by pressing the keys and on the keyboard.
Rules. Quadratic equation.
|x =||-b ± √b2 - 4 a c|
Expression (b2 - 4 a c) is called the discriminant.
- If the discriminant is positive (∆ > 0), then there are two distinct roots, both of which are real numbers.
- If the discriminant is zero (∆ = 0), then there is exactly one distinct real root, sometimes called a double root (x1 =x2).
- If the discriminant is negative (∆ < 0), then there are no real roots.
|x1,2 =||-b ± √∆|
You can input only integer numbers, decimals or fractions in this online calculator (-2.4, 5/7, ...). More in-depth information read at these rules.
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