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X^2-((36/6)*x)-6 = 0
X^2-6*x-6 = 0
X^2-6*x-6 = 0 // - X^2-6
-6*x = -(X^2-6) // : -6
x = (-(X^2-6))/(-6)
x = (6-X^2)/(-6)
x = (6-X^2)/(-6)
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