Discriminant of a quadratic (D = b² − 4ac)

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D = b² − 4ac

What each symbol means

SymbolWhat it stands for
DDiscriminant of ax² + bx + c = 0 (a ≠ 0)
a,b,cReal coefficients with a ≠ 0

When to use this

For the quadratic equation ax² + bx + c = 0 with real coefficients and a ≠ 0.