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Which of the following quadratic expressions cannot be expressed as a product of two linear factors with integer coefficients?

Answer and explanation

Correct answer: \(x^2+2x+2\)

\(x^2+2x+2=(x+1)^2+1\), so it has no linear factors with integer coefficients. In contrast, option A is \((x+2)(x+3)\). Exam tip: test factor pairs of the constant term systematically.

Related tags

FactorisationQuadratic ExpressionsAlgebraic IdentitiesInteger CoefficientsLinear FactorsExploring Algebraic IdentitiesMathematicsClass 9 Mcq

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