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D( x )
x-2 = 0
x-2 = 0
x-2 = 0
x-2 = 0 // + 2
x = 2
x in (-oo:2) U (2:+oo)
x/(x-2) = 2/(x-2)+3 // - 2/(x-2)+3
x/(x-2)-(2/(x-2))-3 = 0
x/(x-2)-2*(x-2)^-1-3 = 0
x/(x-2)-2/(x-2)-3 = 0
x/(x-2)-2/(x-2)+(-3*(x-2))/(x-2) = 0
x-3*(x-2)-2 = 0
x-3*x-2+6 = 0
4-2*x = 0
(4-2*x)/(x-2) = 0
(4-2*x)/(x-2) = 0 // * x-2
4-2*x = 0
4-2*x = 0 // - 4
-2*x = -4 // : -2
x = -4/(-2)
x = 2
x in { 2}
x belongs to the empty set
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