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CalcHub Pro

Quadratic Equation Calculator

Solve quadratic equations of the form ax² + bx + c = 0. Get real solutions, discriminant value, and step-by-step explanations.

Enter Coefficients
For equation: ax² + bx + c = 0
Formula & Theory

Quadratic Formula:

x = (-b ± √(b² - 4ac)) / (2a)

Discriminant:

Δ = b² - 4ac

  • • If Δ > 0: Two distinct real solutions
  • • If Δ = 0: One repeated real solution
  • • If Δ < 0: No real solutions (complex solutions)

Example:

For 2x² + 5x - 3 = 0:
a = 2, b = 5, c = -3
Δ = 5² - 4(2)(-3) = 25 + 24 = 49
x = (-5 ± √49) / 4 = (-5 ± 7) / 4
x₁ = 0.5, x₂ = -3

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