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[" If "|[x,x^(2),x^(3)+1],[y,y^(2),y^(3)...

[" If "|[x,x^(2),x^(3)+1],[y,y^(2),y^(3)+1],[z,z^(2),z^(3)+1]|=0" and "x,y" and "z" are not "],[" equal to any other,prove that,"xyz=-1]

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