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Class 9 Mathematics Exploring Algebraic Identities Algebraic identitiesHard

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Which is the correct expansion of ( (2x-1)^3 )?

Answer and explanation

Correct answer: (8x^3-12x^2+6x-1)

In the cube of a difference, signs occur in (+), (-), (+), (-) order. Exam tip: write the cube of (2x) as (8x^3).

Related tags

Cube Identity 2X Minus 1 Expansion Algebraic Identities Exploring Algebraic Identities Mathematics Class 9 Mcq

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