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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)
(5*x^2+29*x^2+2*x+48)/(x+6) = 0
(34*x^2+2*x+48)/(x+6) = 0
34*x^2+2*x+48 = 0
2*(17*x^2+x+24) = 0
17*x^2+x+24 = 0
DELTA = 1^2-(4*17*24)
DELTA = -1631
DELTA < 0
2 = 0
2/(x+6) = 0
x belongs to the empty set
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