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WAEC 2025 · Paper 1 · Q14✱✱

Factorize x(a−c)+y(c−a)x(a - c) + y(c - a).

Worked solution (try it first)
  1. Reverse the second bracket: c−a=−(a−c)c - a = -(a - c), so y(c−a)=−y(a−c)y(c - a) = -y(a - c).
  2. The expression is x(a−c)−y(a−c)x(a - c) - y(a - c).
  3. Take out the common bracket: (a−c)(x−y)(a - c)(x - y), option D.

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