ECZ 2025 · O-Level Paper 1 — Algebra
Simplify 3(x + 3) - 2x(x - 1).
- A. −2x2 + x + 9
- B. 2x2 + 5x + 9
- C. −2x2 + 5x − 9
- D. −2x2 + 5x + 9
Verified working — step 1
Expand each bracket, then collect like terms. Watch the second bracket: the whole of -2x multiplies each term, and -2x times -1 gives +2x.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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