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Subjects
Class 9MathematicsExploring Algebraic IdentitiesFactorisationEasyLevel 75
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Which of the following expressions is completely factorised by taking out the common factor?

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Answer and explanation

Correct answer: \(7m(m+2)\)

In \(7m(m+2)\), \(7m\) has been taken out as the common factor, and no further common factor remains inside the bracket. In C and D, \(7\) or \(m\) can still be extracted. Exam tip: always check the bracket for a remaining common factor.

Related tags

FactorisationCommon FactorAlgebraic IdentitiesClass 9 MathematicsAlgebraic Expressions

Frequently asked questions

What is the correct answer to this question?

\(7m(m+2)\)

Why is this the correct answer?

In \(7m(m+2)\), \(7m\) has been taken out as the common factor, and no further common factor remains inside the bracket. In C and D, \(7\) or \(m\) can still be extracted. Exam tip: always check the bracket for a remaining common factor.

Which subject and chapter does this question cover?

This is a Class 9 Mathematics question. Chapter: Exploring Algebraic Identities. Topic: Factorisation.

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  5. 5In which of the following expressions is \(3m\) a common factor of every term?
  6. 6Which of the following expressions is a difference of two squares and can be factorised using the identity?
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  8. 8Which is the correct factorisation of (x^2-16)?
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