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1 markDifficulty: Medium

The factorisation of a3 + b3 is:

  1. a(a + b)(a2 + ab + b2)
  2. b(a + b)(a2 − ab + b2)
  3. c(a − b)(a2 + ab + b2)
  4. d(a + b)3

Original Khojo Papers practice question — not from a past board paper.

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