ECZ 2016 · O-Level Paper 1 — Algebra
Simplify 3(a + 5) − a(a − 2).
- A. a2 + 5a + 15
- B. 15 + 5a − a2
- C. 15 + a − a2
- D. 15 + 3a − a2
Verified working — step 1
Expand each bracket, then collect like terms. Watch the second bracket: the whole of -a multiplies each term, and -a times -2 gives +2a.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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