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二次方程计算器

逐步求解二次方程

该计算器将通过配方法或使用二次方程求根公式，逐步求解二次方程。它将同时求出实根和虚根（复数根）。

相关计算器: 判别式计算器

Enter a quadratic equation:

For example, x^2+4x+3=0 or x^2+4=5x.

Choose a method:

If the calculator did not compute something or you have identified an error, or you have a suggestion/feedback, please contact us.

The equation is not quadratic

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相关笔记: What is Quadratic Equation , Incomplete Quadratic Equations , Solving Quadratic Equations by Completing the Square , Quadratic Equation Formula and the Discriminant , Viet Theorem