Question 184300
x+y+z=2 
x^2+y^2+z^2=14
x^4+y^4+z^4=98 
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Looking at the "squares" line
you might think x^2 = 9; y^2 = 4; z^2 = 1
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From there you can figure out the 1st and then the 3rd line.

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Cheers,
Stan H.