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Class 9MathematicsExploring Algebraic IdentitiesFactorisationExpert
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Which is the complete factorised form of (5x^2-20)?

Answer and explanation

Correct answer: (5(x-2)(x+2))

First take common factor (5), then factor (x^2-4). Exam tip: apply identities after taking the common factor.

Related tags

Common FactorDifference Of SquaresComplete FactorisationFactorisationExploring Algebraic IdentitiesMathematicsClass 9 Mcq
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  1. 1A rectangle model must show (x^2-9x+20) in factors. Which pair is correct?
  2. 2In a rectangle model, which option correctly writes \(x^2-13x+40\) as two sides?
  3. 3Which rectangle model correctly represents (2x²+x−15)?
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  5. 5Which visual rectangle model can factor x² + 18x + 80?
  6. 6What is the greatest common factor when factorising 6x + 9?
  7. 7Which is the correct factorisation of 4a + 8?
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