perplexus.info :: Just Math : Three numbers

Three numbers (Posted on 2003-11-17)

If x, y and z are real numbers such that: x + y + z = 5 and xy + yz + zx = 3, what is the largest value that x can have ?

No Solution Yet Submitted by Ravi Raja

Rating: 3.7500 (4 votes)

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re: another solution

| Comment 12 of 22 |

(In reply to another solution by retiarius)

√(x²+y²+z²) does not equal x+y+z

Posted by Tristan on 2003-11-18 18:15:22

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