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Which of the following is a quadratic polynomial in \(x\) that has two distinct real zeroes?

Answer and explanation

Correct answer: \(x^2-5x+6\)

For \(x^2-5x+6\), \(a=1, b=-5, c=6\), so \(b^2-4ac=25-24=1>0\). Hence it has two distinct real zeroes. In option B, the discriminant is 0, giving equal zeroes. Exam tip: check \(D>0\) for distinct real zeroes.

Related tags

Quadratic ExpressionsDiscriminantReal ZeroesPolynomial ClassificationAlgebraic IdentitiesExploring Algebraic IdentitiesMathematicsClass 9 Mcq

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