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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)
(3*x^2+24*x+32)/(x+6) = 0
3*x^2+24*x+32 = 0
3*x^2+24*x+32 = 0
DELTA = 24^2-(3*4*32)
DELTA = 192
DELTA > 0
x = (192^(1/2)-24)/(2*3) or x = (-192^(1/2)-24)/(2*3)
x = (8*3^(1/2)-24)/6 or x = (-8*3^(1/2)-24)/6
(x-((-8*3^(1/2)-24)/6))*(x-((8*3^(1/2)-24)/6)) = 0
((x-((-8*3^(1/2)-24)/6))*(x-((8*3^(1/2)-24)/6)))/(x+6) = 0
( x-((-8*3^(1/2)-24)/6) )
x-((-8*3^(1/2)-24)/6) = 0 // + (-8*3^(1/2)-24)/6
x = (-8*3^(1/2)-24)/6
( x-((8*3^(1/2)-24)/6) )
x-((8*3^(1/2)-24)/6) = 0 // + (8*3^(1/2)-24)/6
x = (8*3^(1/2)-24)/6
x in { (-8*3^(1/2)-24)/6, (8*3^(1/2)-24)/6 }
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