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What will be the nature of the roots of 2x²−3x+1=0?

Answer and explanation

Correct answer: Real and distinct

The governing criterion for the nature of roots of ax²+bx+c=0 is the discriminant D=b²−4ac. In 2x²−3x+1=0, a=2, b=−3 and c=1. Therefore D=(−3)²−4(2)(1)=9−8=1. Since D is positive, the equation has two real and distinct roots. Direct factorisation confirms this: 2x²−3x+1=(2x−1)(x−1), so the roots are x=1/2 and x=1. They are both real and unequal. Equal real roots require D=0, whereas non-real roots require D<0. Hence option A is the only correct choice. The factorisation also provides an independent check that the discriminant-based conclusion is correct.

Related tags

Quadratic-EquationsDiscriminantNature-Of-RootsReal-RootsNature Of RootsQuadratic EquationsMathematicsClass 10 Mcq

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