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Class 9 Mathematics Exploring Algebraic Identities Algebraic identitiesExpert

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What is ( (a+b)^3+(a-b)^3 ) equal to?

Answer and explanation

Correct answer: (2a(a^2+3b^2))

On adding, terms with odd powers of (b) cancel and (2a^3+6ab^2) remains. Exam tip: use symmetry.

Related tags

Cube Identity Sum Of Cubes Binomial Cube Algebraic Identities Exploring Algebraic Identities Mathematics Class 9 Mcq

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