ECZ 2011 · O-Level Paper 1 — Algebra
Given that x = -4 and y = -12, find the value of xy - x2.
- A. -18
- B. -14
- C. 14
- D. 18
Verified working — step 1
xy = (-4)(-12) = 2 and x2 = (-4)2 = 16, so xy - x2 = 2 - 16 = …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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