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If the discriminant of the quadratic equation \(ax^2+bx+c=0\) is zero, which statement about its roots is correct?
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Answer and explanation
Correct answer: दो समान वास्तविक मूल
The discriminant \(D=b^2-4ac\) determines the nature of roots. When \(D=0\), \(x=\frac{-b}{2a}\) occurs twice, so the roots are real and equal. Exam tip: check the sign of the discriminant first.
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What is the correct answer to this question?
दो समान वास्तविक मूल
Why is this the correct answer?
The discriminant \(D=b^2-4ac\) determines the nature of roots. When \(D=0\), \(x=\frac{-b}{2a}\) occurs twice, so the roots are real and equal. Exam tip: check the sign of the discriminant first.
Which subject and chapter does this question cover?
This is a Class 10 Mathematics question. Chapter: Quadratic Equations. Topic: Roots of a Quadratic Equation.
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