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Four Fours Fancy Formula! (Posted on 2004-12-24) Difficulty: 3 of 5
Find x if √(4+√(4-√(4+√(4-x))))=x.

See The Solution Submitted by Old Original Oskar!    
Rating: 2.2857 (7 votes)

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answer | Comment 5 of 6 |

x =(1 + sqrt(13)/2

  Posted by K Sengupta on 2007-04-17 12:20:22
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