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