ECZ 2010 · O-Level Paper 1 — Algebra

Factorize completely 4u2/a2 - 19.

  • A. (2ua - 13)(2ua + 13)
  • B. 2ua - 132
  • C. (4ua - 19)(4ua + 19)
  • D. (2ua)(13)

Verified working — step 1

Both terms are perfect squares with a minus between them - a difference of two squares.

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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