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Which of the following expressions can be factorised into two identical binomial factors?

Answer and explanation

Correct answer: \(x^2+10x+25\)

In \(x^2+10x+25\), \(25=5^2\) and the middle term is \(2\times x\times5=10x\). Hence it equals \((x+5)^2\). In \(x^2+10x+24\), the constant term is not 25. Exam tip: verify the middle term for a perfect square.

Related tags

FactorisationAlgebraic IdentitiesPerfect Square TrinomialClass 9 MathematicsBinomial SquareExploring Algebraic IdentitiesMathematicsClass 9 Mcq

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