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1 markPaper 1 · Multiple choiceCubic Functions and Equations

CAPE Pure Mathematics Unit 1 · May/June 2011 · Paper 1 · Question Q13

Given that \alpha, 2\alpha and 3\alpha are the roots of the equation x^3 + kx^2 + 48 = 0, the value of the constant k is

  1. (A)-12
  2. (B)-2
  3. (C)2
  4. (D)12

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