ECZ 2017 · GCE Paper 1 — Algebra
Factorise completely x²/4y² − 19.
- A. (x2y − 13)²
- B. (x2y − 13)(x2y + 13)
- C. (x4y − 13)(x4y + 13)
- D. (x2y − 19)(x2y + 19)
Verified working — step 1
Both terms are perfect squares: x²/4y² = (x2y)² and 19= …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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