ECZ 2012 · O-Level Paper 1 — Algebra
Factorise completely 4 - 16x2.
- A. 4(1 - 4x2)
- B. 4(1 - 2x)(1 + 2x)
- C. 4(1 - 2x)2
- D. 16(1 - x)(1 + x)
Verified working — step 1
Take out the common factor 4: 4(1 - 4x2). Then 1 - 4x2 …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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