Quadratic Formula Solver
Solve quadratic equations of the form ax² + bx + c = 0 using the quadratic formula. Shows discriminant and both roots.
Root1
3.000000
Discriminant1.0000
Vertex X2.5000
Vertex Y-0.2500
How to Solve a Quadratic Equation
Quadratic Formula
x = (-b ± sqrt(b² - 4ac)) / (2a)
For the equation ax² + bx + c = 0:
1. Calculate the discriminant: D = b² - 4ac 2. If D > 0: two distinct real roots 3. If D = 0: one repeated real root 4. If D < 0: no real roots (complex roots)
Vertex
The vertex of the parabola is at x = -b/(2a), y = c - b²/(4a).
Example Calculation
Solve x² - 5x + 6 = 0.
- 01D = (-5)² - 4(1)(6) = 25 - 24 = 1
- 02x₁ = (5 + √1) / 2 = 6/2 = 3
- 03x₂ = (5 - √1) / 2 = 4/2 = 2
- 04Roots are x = 3 and x = 2
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