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x in (-oo:+oo)
z^2 = (x^2)/2-((y^2)/3)-2 // - (x^2)/2-((y^2)/3)-2
(y^2)/3-((x^2)/2)+z^2+2 = 0
-1/2*x^2 = -(1/3*y^2+z^2+2) // : -1/2
x^2 = 2*(1/3*y^2+z^2+2)
x^2 = 2*(1/3*y^2+z^2+2) // ^ 1/2
abs(x) = 2^(1/2)*(1/3*y^2+z^2+2)^(1/2)
x = 2^(1/2)*(1/3*y^2+z^2+2)^(1/2) or x = -(2^(1/2)*(1/3*y^2+z^2+2)^(1/2))
x in { 2^(1/2)*(1/3*y^2+z^2+2)^(1/2), -(2^(1/2)*(1/3*y^2+z^2+2)^(1/2)) }
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