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Which of the following expressions is a factor of \(x^3+8\)?

Answer and explanation

Correct answer: \(x+2\)

\(x^3+8=x^3+2^3\) is a sum of cubes. Using \(a^3+b^3=(a+b)(a^2-ab+b^2)\), one factor is \(x+2\). \(x-2\) is associated with a difference of cubes. Exam tip: identify the sign before selecting the identity.

Related tags

Algebraic IdentitiesSum Of CubesFactorisationPolynomialsClass 9 MathematicsExploring Algebraic IdentitiesMathematicsClass 9 Mcq

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