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SMO 2026 Open Round 1 Question 25

SMO · SMO 2026 Open Round 1

Question 25

Find the value of $W^2-2W$ where
$$W=\frac{\sqrt{100+\sqrt1}+\sqrt{100+\sqrt2}+\cdots+\sqrt{100+\sqrt{9999}}}{\sqrt{100-\sqrt1}+\sqrt{100-\sqrt2}+\cdots+\sqrt{100-\sqrt{9999}}}.$$