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If a quadratic equation has equal roots, what is the value of its discriminant?
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Answer and explanation
Correct answer: शून्य
For \(ax^2+bx+c=0\), the discriminant is \(D=b^2-4ac\). Equal roots occur precisely when \(D=0\). If \(D>0\), there are two distinct real roots. Exam tip: identify the nature of roots by checking the discriminant first.
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What is the correct answer to this question?
शून्य
Why is this the correct answer?
For \(ax^2+bx+c=0\), the discriminant is \(D=b^2-4ac\). Equal roots occur precisely when \(D=0\). If \(D>0\), there are two distinct real roots. Exam tip: identify the nature of roots by checking 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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