ECZ 2021 · GCE Paper 1 — Algebra
Simplify 2ab − ab² − 7ab + a²b + 5ab².
- A. a²b − 6ab² − 5ab
- B. a²b + 4ab² + 5ab
- C. a²b + 4ab² − 5ab
- D. 5a²b² − 5ab
Verified working — step 1
Collect like terms separately. The ab terms: 2ab − 7ab = −5ab. The ab² terms: −ab² + 5ab² = …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.
Have a different question?
Search it — if it is from a past paper or a school mock, chances are we have it worked out, or one that uses the same method.
Search any past-paper question