这个工具适合做什么
Use it to solve ax² + bx + c = 0 and to inspect the discriminant before choosing a method.
- Solve homework equations.
- Check whether a projectile path crosses a height.
- Review vertex and root behavior.
求解 ax² + bx + c = 0 的二次方程。
x = (-b ± √(b² - 4ac)) / 2a输入已知数值后,计算器会使用该公式给出主要结果,并提供辅助指标帮助你检查结果是否合理。
| Symbol | Variable | Description |
|---|---|---|
| a | a | a used by the calculator. |
| b | b | b used by the calculator. |
| c | c | c used by the calculator. |
输入已知数值
按字段填写数值,并确认单位与页面公式一致。
点击计算
主结果会显示在高亮行中,相关辅助结果会显示在下方。
解读结果
The roots show where the parabola crosses the x-axis. The discriminant explains whether the roots are two real values, one repeated value, or a complex pair.
Use it to solve ax² + bx + c = 0 and to inspect the discriminant before choosing a method.
The roots show where the parabola crosses the x-axis. The discriminant explains whether the roots are two real values, one repeated value, or a complex pair.
The a value cannot be 0. If a is 0, the expression is linear rather than quadratic.