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AlgebraQuadratic Equations
Nature of Roots
Use the discriminant to classify roots before solving.
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Live result
Discriminant D = b²−4ac
0
Nature of roots
Two equal real roots
Roots
-2, -2
Parabola y = ax² + bx + cDiscriminant D = b²−4ac: 0
y = ax² + bx + c
Quadratic formula: x = (−b ± √D) / 2a.