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1 markPaper 1 · Multiple choiceComplex Numbers

CAPE Pure Mathematics Unit 2 · May/June 2018 · Paper 1 · Question Q9

The expression i[(1 + i)^2 - (1 - i)^2] is equal to

  1. (A)-4
  2. (B)-2
  3. (C)2
  4. (D)4

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