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If the discriminant D > 0 for a quadratic equation, what will be the nature of its roots?

Answer and explanation

Correct answer: Two distinct real roots

For a quadratic equation ax² + bx + c = 0, the discriminant is D = b² − 4ac. It determines the nature of the roots because the quadratic formula is x = (−b ± √D)/(2a). If D > 0, then √D is real and non-zero. The plus and minus signs consequently produce two different real values of x, so the equation has two distinct real roots. If D = 0, the two values coincide and the roots are equal. If D < 0, √D is not real, so there are no real roots. Therefore option A is correct; the other choices correspond to different discriminant conditions or an incomplete description.

Related tags

Quadratic EquationsDiscriminantNature Of RootsMathematicsClass 10 Mcq

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