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D( x )
x-1 = 0
x-1 = 0
x-1 = 0
x-1 = 0 // + 1
x = 1
x in (-oo:1) U (1:+oo)
(3*x+2)/(x-1)+3 = 4 // - 4
(3*x+2)/(x-1)-4+3 = 0
(3*x+2)/(x-1)+(-4*(x-1))/(x-1)+(3*(x-1))/(x-1) = 0
3*(x-1)-4*(x-1)+3*x+2 = 0
3*x-x-3+6 = 0
2*x+3 = 0
(2*x+3)/(x-1) = 0
(2*x+3)/(x-1) = 0 // * x-1
2*x+3 = 0
2*x+3 = 0 // - 3
2*x = -3 // : 2
x = -3/2
x = -3/2
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