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D( x )
x-2 = 0
x^2-(4*x)+4 = 0
x-2 = 0
x-2 = 0
x-2 = 0 // + 2
x = 2
x^2-(4*x)+4 = 0
x^2-(4*x)+4 = 0
x^2-4*x+4 = 0
x^2-4*x+4 = 0
DELTA = (-4)^2-(1*4*4)
DELTA = 0
x = 4/(1*2)
x = 2 or x = 2
x in (-oo:2) U (2:+oo)
(5*x-10)/(x^2-(4*x)+4)+1/(x-2) = 0
(5*x-10)/(x^2-4*x+4)+1/(x-2) = 0
x^2-4*x+4 = 0
x^2-4*x+4 = 0
x^2-4*x+4 = 0
DELTA = (-4)^2-(1*4*4)
DELTA = 0
x = 4/(1*2)
x = 2 or x = 2
(x-2)^2 = 0
(5*x-10)/((x-2)^2)+1/(x-2) = 0
(5*x-10)/((x-2)^2)+(1*(x-2))/((x-2)^2) = 0
1*(x-2)+5*x-10 = 0
6*x-12 = 0
(6*x-12)/((x-2)^2) = 0
(6*x-12)/((x-2)^2) = 0 // * (x-2)^2
6*x-12 = 0
6*x-12 = 0 // + 12
6*x = 12 // : 6
x = 12/6
x = 2
x in { 2}
x belongs to the empty set
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