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12*x^2-(1/2) = 0
12*x^2-1/2 = 0
12*x^2 = 1/2 // : 12
x^2 = 1/24
x^2 = 1/24 // ^ 1/2
abs(x) = (1/24)^(1/2)
x = (1/24)^(1/2) or x = -(1/24)^(1/2)
x in { (1/24)^(1/2), -(1/24)^(1/2) }
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