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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)
1/(x-2) = 2/3 // - 2/3
1/(x-2)-(2/3) = 0
1/(x-2)-2/3 = 0
(1*3)/(3*(x-2))+(-2*(x-2))/(3*(x-2)) = 0
1*3-2*(x-2) = 0
7-2*x = 0
(7-2*x)/(3*(x-2)) = 0
(7-2*x)/(3*(x-2)) = 0 // * 3*(x-2)
7-2*x = 0
7-2*x = 0 // - 7
-2*x = -7 // : -2
x = -7/(-2)
x = 7/2
x = 7/2
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