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How many roots? (Posted on 2011-07-31) Difficulty: 3 of 5
Prove that the equation
x^4-4*x-1=0
has at most 2 real number solutions.

No Solution Yet Submitted by Ady TZIDON    
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reply | Comment 3 of 6 |
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  Posted by LeonEdwina32 on 2011-10-13 08:44:49
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