c+CalcLantern

Quadratic roots

Find both real or complex roots of ax² + bx + c = 0.

How this works

Uses the quadratic formula with a cancellation-resistant calculation for real roots.

Example

Using the example inputs, first root is 3.

a
1
b
-5
c
6
First root
3

Scope and assumptions

Uses your inputs only; results are rounded for display.

OpenStax mathematics

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