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HKIMO 2026 Grade 9 National Preliminary Set 04 Question 7

HKIMO · HKIMO 2026 Grade 9 National Preliminary Set 04

Question 7

Find $x$ given that $7=\sqrt{x+\sqrt{x+\sqrt{x+\cdots}}}$.
  1. 56
  2. 49
  3. 42
  4. 35