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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)
3/(x-2) = 2.4 // - 2.4
3/(x-2)-2.4 = 0
3/(x-2)+(-2.4*(x-2))/(x-2) = 0
3-2.4*(x-2) = 0
7.8-2.4*x = 0
(7.8-2.4*x)/(x-2) = 0
(7.8-2.4*x)/(x-2) = 0 // * x-2
7.8-2.4*x = 0
7.8-2.4*x = 0 // - 7.8
-2.4*x = -7.8 // : -2.4
x = -7.8/(-2.4)
x = 3.25
x = 3.25
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