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Choose the correct conclusion about the nature of the roots of the equation \(2x^2-x+2=0\).

Answer and explanation

Correct answer: No real roots; \(D=-15\)

For the given equation, \(a=2\), \(b=-1\), and \(c=2\). Thus, the discriminant is \(D=b^2-4ac=(-1)^2-4(2)(2)=1-16=-15\). Since \(D<0\), the quadratic equation has no real roots. Exam tip: calculate the discriminant first and identify the nature of the roots from its sign.

Related tags

Quadratic EquationsNature Of RootsDiscriminantNo Real RootsClass 10 MathematicsMathematicsClass 10 Mcq

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