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Which statement correctly describes the nature of the roots of \(7x^2+2x+3=0\)?

Answer and explanation

Correct answer: No real roots

Here, \(a=7\), \(b=2\), and \(c=3\). The discriminant is \(\Delta=b^2-4ac=2^2-4(7)(3)=4-84=-80\). Since \(\Delta<0\), the equation has no real roots. Two real and equal roots occur only when \(\Delta=0\), so option B is incorrect. In an exam, first check the sign of the discriminant to determine the nature of the roots.

Related tags

Quadratic EquationsNature Of RootsDiscriminantNo Real RootsMathematicsClass 10 Mcq

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