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Curious Cubic Calculation? (Posted on 2004-10-13) Difficulty: 2 of 5
Show that α=√(7+5√2)+√(7-5√2) is an integer. No calculators or computers allowed!

  Submitted by Old Original Oskar!    
Rating: 3.8333 (6 votes)
Solution: (Hide)
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  Subject Author Date
SolutionSolutionK Sengupta2007-05-16 11:16:02
re: Full SolutionRhys2004-10-17 03:51:42
Some Thoughtsre: inegrity by squaring REVISITEDAdy TZIDON2004-10-15 06:14:32
re(2): SolutionNosher2004-10-14 02:02:19
Some Thoughtsre: AlgebraicallyFederico Kereki2004-10-14 01:00:24
SolutionAlgebraicallye.g.2004-10-13 16:24:58
re: Answer + SolutionJer2004-10-13 16:13:16
SolutionI way I see itJer2004-10-13 16:03:57
SolutionAnswer + Solutionnikki2004-10-13 13:38:20
re: SolutionDavid Shin2004-10-13 13:33:30
SolutionFull SolutionBrian Smith2004-10-13 13:06:00
Some Thoughtsre: Solutione.g.2004-10-13 12:59:16
SolutionSolutionDavid Shin2004-10-13 12:57:31
Solutioninegrity by squaringAdy TZIDON2004-10-13 12:49:02
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