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D( x )
x-5 = 0
x-5 = 0
x-5 = 0
x-5 = 0 // + 5
x = 5
x in (-oo:5) U (5:+oo)
t_2 = 0
(x^3-6*x^2+3*x-1)/(x-5)+t_2 = 0
(x^3-6*x^2+3*x-1)/(x-5)+(t_2*(x-5))/(x-5) = 0
t_2*(x-5)+x^3-6*x^2+3*x-1 = 0
t_2*x-5*t_2+x^3-6*x^2+3*x-1 = 0
t_2*x-5*t_2+x^3-6*x^2+3*x-1 = 0
t_2*x-5*t_2+x^3-6*x^2+3*x-1
x*(x^2+3)+t_2*x-5*t_2-6*x^2-1
x*(t_2-6*x)+x*(x^2+3)-5*t_2-1
x*(t_2-6*x)-1*(5*t_2+1)+x*(x^2+3)
x*(t_2+x^2-6*x+3)-1*(5*t_2+1)
0*(t_2+x^2-6*x+3)
(0*(t_2+x^2-6*x+3))/(x-5) = 0
(0*(t_2+x^2-6*x+3))/(x-5) = 0 // * x-5
0*(t_2+x^2-6*x+3) = 0
t_2+x^2-6*x+3 = 0
DELTA = (-6)^2-(1*4*(t_2+3))
DELTA = 36-4*(t_2+3)
36-4*(t_2+3) = 0
36-4*(t_2+3) = 0
24-4*t_2 = 0
24-4*t_2 = 0
24-4*t_2 = 0 // - 24
-4*t_2 = -24 // : -4
t_2 = -24/(-4)
t_2 = 6
DELTA = 0 <=> t_4 = 6
x = 6/(1*2) i t_2 = 6
x = 3 i t_2 = 6
( x = ((36-4*(t_2+3))^(1/2)+6)/(1*2) or x = (6-(36-4*(t_2+3))^(1/2))/(1*2) ) i t_2 > 6
( x = ((36-4*(t_2+3))^(1/2)+6)/2 or x = (6-(36-4*(t_2+3))^(1/2))/2 ) i t_2 > 6
t_2-6 > 0
t_2-6 > 0 // + 6
t_2 > 6
x in { 3, ((36-4*(0+3))^(1/2)+6)/2, (6-(36-4*(0+3))^(1/2))/2 }
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