ECZ 2019 · O-Level Paper 1 — Algebra
Simplify 4x2 + 2y2 - xy - 6x2 + 2xy.
- A. 10x2 + 2y2 + xy
- B. 2x2 + 2y2 + xy
- C. -2x2 + 2y2 - 3xy
- D. -2x2 + 2y2 + xy
Verified working — step 1
Like terms must match EXACTLY in letters and powers - x2, y2 and xy are three separate families. Sort, 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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