Wyatt C.

asked • 02/21/18

Hard problem, discrete math.

If x+y+z=3 , x2+y2+z2=4, and x3+y3+z3=5 what is x, y, and z? I found that none of them can be equal or greater than 2.

1 Expert Answer


Bobosharif S. answered • 02/21/18

Mathematics/Statistics Tutor

Kenneth S.

Would you care to describe how the solution was obtained?
Was it via Mathematica or was it by hard work with pencil & paper?


Bobosharif S.

I coud describe solution, but the question didn't ask how to solve. It easier by hand in paper. 
Just I moved to a new system of coordinate shifting x, y znd z by 1, then it made easier to solve.


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