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D( x )
x+6 = 0
x+6 = 0
x+6 = 0
x+6 = 0 // - 6
x = -6
x in (-oo:-6) U (-6:+oo)
(4*x^2+29*x+29)/(x+6) = 0
4*x^2+29*x+29 = 0
4*x^2+29*x+29 = 0
DELTA = 29^2-(4*4*29)
DELTA = 377
DELTA > 0
x = (377^(1/2)-29)/(2*4) or x = (-377^(1/2)-29)/(2*4)
x = (377^(1/2)-29)/8 or x = (-(377^(1/2)+29))/8
(x+(377^(1/2)+29)/8)*(x-((377^(1/2)-29)/8)) = 0
((x+(377^(1/2)+29)/8)*(x-((377^(1/2)-29)/8)))/(x+6) = 0
( x+(377^(1/2)+29)/8 )
x+(377^(1/2)+29)/8 = 0 // - (377^(1/2)+29)/8
x = -((377^(1/2)+29)/8)
( x-((377^(1/2)-29)/8) )
x-((377^(1/2)-29)/8) = 0 // + (377^(1/2)-29)/8
x = (377^(1/2)-29)/8
x in { -((377^(1/2)+29)/8), (377^(1/2)-29)/8 }
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