ECZ 2026 · GCE Paper 1 — Quadratic Equations
Solve the equation 2x2 - 72 = 0.
- A. x = 6 only
- B. x = -36 or x = 36
- C. x = -6 or x = 6
- D. x = -12 or x = 12
Verified working — step 1
Isolate x2 first, then square-root both sides - remembering that BOTH 6 and -6 square to 36.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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