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What is the nature of the roots of the equation \(2x^2-7x+1=0\)?

Answer and explanation

Correct answer: Two real, irrational and distinct roots

Here, \(a=2\), \(b=-7\), and \(c=1\). Therefore, the discriminant is \(D=b^2-4ac=(-7)^2-4(2)(1)=41\). Since \(D>0\), the roots are real and distinct; because 41 is not a perfect square, they are also irrational. Option B is incorrect because rational roots in this test require a positive perfect-square discriminant. Exam tip: when \(D>0\) and is not a perfect square, the roots are real, distinct, and irrational.

Related tags

Quadratic-EquationsNature-Of-RootsDiscriminantIrrational-RootsClass-10-MathematicsNature Of RootsQuadratic EquationsMathematics

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