关于本计算器
Quadratic equations with discriminant and roots plus rule-of-three proportions, live as you type.
代数求解器
一元二次方程与比例。
1x² + 0x − 4 = 0
判别式 (b²−4ac)16
根-2, 2
常见问题
Negative discriminant?
No real roots — the parabola never crosses zero; try complex-capable tools for those.
Linear case?
With a = 0 the equation is linear: single root −c/b.
Proportion formula?
a/b = c/x gives x = b·c/a.