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**tony123****Member**- Registered: 2007-08-03
- Posts: 189

Let

positive real numbers such that , andfind all possible values of

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**mathsyperson****Moderator**- Registered: 2005-06-22
- Posts: 4,900

a=b=c=d=3, by inspection. I'd guess there aren't any others.

Why did the vector cross the road?

It wanted to be normal.

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**JaneFairfax****Member**- Registered: 2007-02-23
- Posts: 6,868

are roots of the equation . Solve it for and you have your answer.

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