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If a quadratic equation with rational coefficients has discriminant \(\Delta=27\), what is the nature of its roots?

Answer and explanation

Correct answer: Two distinct real irrational roots

For a quadratic equation, \(\Delta>0\) means that the roots are real and distinct. Since \(\Delta=27\) is positive, the roots are distinct and real. Also, 27 is not a perfect square; with rational coefficients, the roots are therefore irrational. Hence, option A is correct. Exam tip: \(\Delta>0\), \(\Delta=0\), and \(\Delta<0\) indicate distinct real, equal real, and non-real roots, respectively.

Related tags

Quadratic-EquationsDiscriminantNature-Of-RootsIrrational-RootsNature Of RootsQuadratic EquationsMathematicsClass 10 Mcq

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