Vieta's Theorem Calculator

Review Vieta’s formulas for the sum and product of a quadratic equation’s roots from its coefficients.

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x₁ + x₂ = -b/a，x₁·x₂ = c/a

a

x² 系数

b

x 系数

c

常数项

1x² + -3x + 2 = 0

判别式 Δ

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两根之和

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两根之积

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两个根

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✅ 韦达定理验证

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📝 解题步骤

S

两根之和

P

两根之积

🔃 构造的方程

x² - Sx + P = 0

请输入两根之和 S 与两根之积 P

📝 解题步骤