Quadratic formula (Shreedharacharya) (x = (−b ± √D) / (2a))

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x = (−b ± √D) / (2a)

What each symbol means

SymbolWhat it stands for
Db² − 4ac
a,b,cCoefficients of ax² + bx + c = 0, a ≠ 0

When to use this

Real coefficients; real roots require D ≥ 0.