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Class 9MathematicsExploring Algebraic IdentitiesFactorisationExpert
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Which is the complete factorised form of (16x^4-81y^4)?

Answer and explanation

Correct answer: ((2x-3y)(2x+3y)(4x^2+9y^2))

It is ((4x^2)^2-(9y^2)^2), and (4x^2-9y^2) factors again. In exams check difference of squares repeatedly.

Related tags

Difference Of SquaresComplete FactorisationExpertFactorisationExploring Algebraic IdentitiesMathematicsClass 9 Mcq
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  5. 5Which visual rectangle model can factor x² + 18x + 80?
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