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x in (-oo:+oo)
3/X+4*x^2+2*x^2+2 = 0
6*x^2 = -(3*X^-1+2) // : 6
x^2 = (-(3*X^-1+2))/6
x^2 = (-(3*X^-1+2))/6 // ^ 1/2
abs(x) = ((-(3*X^-1+2))^(1/2))/(6^(1/2))
x = ((-(3*X^-1+2))^(1/2))/(6^(1/2)) or x = -(((-(3*X^-1+2))^(1/2))/(6^(1/2)))
x in { ((-(3*X^-1+2))^(1/2))/(6^(1/2)), -(((-(3*X^-1+2))^(1/2))/(6^(1/2))) }
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