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Which statement correctly describes the nature of the roots of \(2x^2-x+4=0\)?

Answer and explanation

Correct answer: It has no real roots

Here, \(a=2\), \(b=-1\), and \(c=4\). The discriminant is \(D=b^2-4ac=(-1)^2-4(2)(4)=1-32=-31\). Since \(D<0\), the equation has no real roots, so option A is correct. Exam tip: Check the sign of the discriminant first to determine the nature of the roots.

Related tags

Quadratic EquationsNature Of RootsDiscriminantNo Real RootsMathematicsClass 10 Mcq

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