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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
(3*x-5)/x = (2*x-3)/x-((x-2)/2) // - (2*x-3)/x-((x-2)/2)
(3*x-5)/x-((2*x-3)/x)+(x-2)/2 = 0
(3*x-5)/x+(-1*(2*x-3))/x+(x-2)/2 = 0
(2*(3*x-5))/(2*x)+(-1*2*(2*x-3))/(2*x)+(x*(x-2))/(2*x) = 0
2*(3*x-5)-1*2*(2*x-3)+x*(x-2) = 0
x^2+2*x-2*x-4 = 0
x^2-4 = 0
(x^2-4)/(2*x) = 0
(x^2-4)/(2*x) = 0 // * 2*x
x^2-4 = 0
1*x^2 = 4 // : 1
x^2 = 4
x^2 = 4 // ^ 1/2
abs(x) = 2
x = 2 or x = -2
x in { 2, -2 }
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