ECZ 2023 · O-Level Paper 1 — Algebra
Simplify 2a - 5b(a - b) + ab.
- A. 2a - 4ab + 5b2
- B. 2a - 6ab + 5b2
- C. 2a - 5ab + 5b2
- D. 2a + 6ab - 5b2
Verified working — step 1
Expand the bracket first, watching the signs: -5b multiplies BOTH terms, and -5b times -b gives +5b2.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