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What is the nature of the roots of \\(x^2+2(3-\sqrt{10})x+16=0\\)?

Answer and explanation

Correct answer: No real roots

The discriminant is \\(D=b^2-4ac=4(3-\sqrt{10})^2-64=12-24\sqrt{10}=12(1-2\sqrt{10})<0\\). Therefore, the equation has no real roots. Option B would require \\(D=0\\), but the discriminant here is negative. Exam tip: For a quadratic equation, \\(D<0\\) means that the roots are not real.

Related tags

Quadratic-EquationsNature-Of-RootsDiscriminantSurd-CoefficientsNature Of RootsQuadratic EquationsMathematicsClass 10 Mcq

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