ECZ 2016 · GCE Paper 1 — Quadratic Equations

Solve the equation 3x² = 5x.

  • A. x = 53only
  • B. x = 0 or x = 35
  • C. x = ±√(53)
  • D. x = 0 or x = 53

Verified working — step 1

Bring everything to one side: 3x² − 5x = 0, so x(3x − 5) = 0. Either x = 0 or 3x = 5, giving x = 0 or x = …

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Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.

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