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X in (-oo:+oo)
X^2-(36/5) = 0
X^2-36/5 = 0
1*X^2 = 36/5 // : 1
X^2 = 36/5
X^2 = 36/5 // ^ 1/2
abs(X) = (36/5)^(1/2)
X = (36/5)^(1/2) or X = -(36/5)^(1/2)
X in { (36/5)^(1/2), -(36/5)^(1/2) }
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