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HKIMO 2026 Grade 9 National Preliminary Set 03 Question 6

HKIMO · HKIMO 2026 Grade 9 National Preliminary Set 03

Question 6

Given $x>0$ and $x+1/x=4$, find $x^3+1/x^3$.
  1. 68
  2. 60
  3. 76
  4. 52