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Which expression has the simplified form (4x^2-9x)?

Answer and explanation

Correct answer: \(x(4x-9)\)

Using the distributive law, \(x(4x-9)=x\cdot4x-x\cdot9=4x^2-9x\). Therefore, option A is correct. Option B expands to \(4x^2-36x\), so it is not equivalent even though it looks similar. Exam tip: To check a factored expression, multiply each term outside the bracket by every term inside it.

Related tags

Algebraic ExpressionsPolynomialsDistributive PropertyExpansionFactorised FormIntroduction To PolynomialsMathematicsClass 9 Mcq

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