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What is the nature of the roots of the equation \(6x^2-4\sqrt{6}x+4=0\)?

Answer and explanation

Correct answer: Two real and equal \(D=0\)

Here, \(a=6\), \(b=-4\sqrt{6}\), and \(c=4\). Thus, the discriminant is \(D=b^2-4ac=(-4\sqrt{6})^2-4(6)(4)=96-96=0\). A quadratic equation with \(D=0\) has two real and equal roots. In fact, the repeated root is \(x=\frac{\sqrt{6}}{3}\). In an exam, calculate the discriminant first to determine the nature of the roots.

Related tags

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

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