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Given positive real numbers x, y, and z that satisfy the following system of equations?

+2 votes
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Given positive real numbers x, y, and z that satisfy the following system of equations:
x² + xy + y² = 9,
y² + yz + z² = 4,
z² + zx + x² = 1,

Find x + y + z

posted Oct 14, 2014 by Vrije Mani Upadhyay

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1 Solution

0 votes

x=1
y=2
z=0

Sooo........

x+y+z=1+2+0


3

But I calculated the first equation and that equaled 9.

solution Apr 20, 2016 by anonymous



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