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4/2-(6*x^2)+17 = 0
4/2-6*x^2+17 = 0
-6*x^2 = -19 // : -6
x^2 = 19/6
x^2 = 19/6 // ^ 1/2
abs(x) = (19/6)^(1/2)
x = (19/6)^(1/2) or x = -(19/6)^(1/2)
x in { (19/6)^(1/2), -(19/6)^(1/2) }
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