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X^3-(3*x)-(10/3) = 0
X^3-3*x-10/3 = 0
X^3-3*x-10/3 = 0 // - X^3-10/3
-3*x = -(X^3-10/3) // : -3
x = (-(X^3-10/3))/(-3)
x = (10/3-X^3)/(-3)
x = (10/3-X^3)/(-3)
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