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For a quadratic equation, if the discriminant is \(D=-(b+3)^2\) and \(b\neq -3\), what will be the nature of its roots?

Answer and explanation

Correct answer: No real roots

Since \(b\neq -3\), we have \(b+3\neq 0\), so \((b+3)^2>0\). Therefore, \(D=-(b+3)^2<0\). For a quadratic equation, a negative discriminant means that the roots are not real; they are complex conjugates. Hence, option A is correct. Exam tip: Always remember that \(D<0\) means no real roots.

Related tags

Quadratic EquationsDiscriminantNature Of RootsNo Real RootsMathematicsClass 10 Mcq

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