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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
(3*x^2-(13*x)-10)/x-5 = 0
(3*x^2-13*x-10)/x-5 = 0
(3*x^2-13*x-10)/x+(-5*x)/x = 0
3*x^2-13*x-5*x-10 = 0
3*x^2-18*x-10 = 0
3*x^2-18*x-10 = 0
3*x^2-18*x-10 = 0
DELTA = (-18)^2-(-10*3*4)
DELTA = 444
DELTA > 0
x = (444^(1/2)+18)/(2*3) or x = (18-444^(1/2))/(2*3)
x = (2*111^(1/2)+18)/6 or x = (18-2*111^(1/2))/6
(x-((18-2*111^(1/2))/6))*(x-((2*111^(1/2)+18)/6)) = 0
((x-((18-2*111^(1/2))/6))*(x-((2*111^(1/2)+18)/6)))/x = 0
((x-((18-2*111^(1/2))/6))*(x-((2*111^(1/2)+18)/6)))/x = 0 // * x
(x-((18-2*111^(1/2))/6))*(x-((2*111^(1/2)+18)/6)) = 0
( x-((18-2*111^(1/2))/6) )
x-((18-2*111^(1/2))/6) = 0 // + (18-2*111^(1/2))/6
x = (18-2*111^(1/2))/6
( x-((2*111^(1/2)+18)/6) )
x-((2*111^(1/2)+18)/6) = 0 // + (2*111^(1/2)+18)/6
x = (2*111^(1/2)+18)/6
x in { (18-2*111^(1/2))/6, (2*111^(1/2)+18)/6 }
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