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VTMO 2026 - Grade 8 - Semifinal - SET 1 - Self-study Question 4

VTMO · VTMO 2026 - Grade 8 - Semifinal - SET 1 - Self-study

Question 4

Given $x-y=5$, evaluate $x^2(x+1)-y^2(y-1)+xy-3xy(x-y+1)$.
  1. $135$
  2. $153$
  3. $200$
  4. $150$
  5. $180$