ECZ 2020 · O-Level Paper 1 — Quadratic Equations

Solve the equation 5x2 = x.

  • A. x = 15 only
  • B. x = 0 or x = 15
  • C. x = 0 or x = 5
  • D. x = ±15

Verified working — step 1

Bring everything to one side and factor out x - dividing by x instead would silently throw away a solution.

The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.

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

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