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
Like terms must match EXACTLY in their letters and powers - ab, ab2 and a2b are three different families. Sort first, then add each family.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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