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Class 9MathematicsExploring Algebraic IdentitiesFactorisationExpert
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Factorise (x^2-4y^2+2x+4y).

Answer and explanation

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

Write it as (x^2-4y^2+2(x+2y)), so ((x+2y)) is common. In exams, group after difference of squares.

Related tags

GroupingDifference-Of-SquaresFactorisationExploring Algebraic IdentitiesMathematicsClass 9 Mcq
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  1. 1A rectangle model must show (x^2-9x+20) in factors. Which pair is correct?
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  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?
  8. 8Which common factor will be taken out from (xy + xz)?
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