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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+3)/(x-2) = 5/4 // - 5/4
(x+3)/(x-2)-(5/4) = 0
(x+3)/(x-2)-5/4 = 0
(4*(x+3))/(4*(x-2))+(-5*(x-2))/(4*(x-2)) = 0
4*(x+3)-5*(x-2) = 0
22-x = 0
(22-x)/(4*(x-2)) = 0
(22-x)/(4*(x-2)) = 0 // * 4*(x-2)
22-x = 0
22-x = 0 // - 22
-x = -22 // * -1
x = 22
x = 22
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