Discriminant

The discriminant of ax²+bx+c=0 is D = b²−4ac. It tells how many real roots the equation has.

D > 0: two distinct real roots. D = 0: one repeated root. D < 0: no real roots.

x = (−b ± √D) / (2a), where D = b²−4ac.

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The discriminant of ax²+bx+c=0 is D = b²−4ac. It tells how many real roots the equation has.

D > 0: two roots. D = 0: one root. D < 0: no real roots.

x = (−b ± √D) / (2a), where D = b²−4ac.