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D( x )
x+7 = 0
x+7 = 0
x+7 = 0
x+7 = 0 // - 7
x = -7
x in (-oo:-7) U (-7:+oo)
(4*x^2+34*x+37)/(x+7) = 0
4*x^2+34*x+37 = 0
4*x^2+34*x+37 = 0
DELTA = 34^2-(4*4*37)
DELTA = 564
DELTA > 0
x = (564^(1/2)-34)/(2*4) or x = (-564^(1/2)-34)/(2*4)
x = (2*141^(1/2)-34)/8 or x = (-2*141^(1/2)-34)/8
(x-((-2*141^(1/2)-34)/8))*(x-((2*141^(1/2)-34)/8)) = 0
((x-((-2*141^(1/2)-34)/8))*(x-((2*141^(1/2)-34)/8)))/(x+7) = 0
( x-((-2*141^(1/2)-34)/8) )
x-((-2*141^(1/2)-34)/8) = 0 // + (-2*141^(1/2)-34)/8
x = (-2*141^(1/2)-34)/8
( x-((2*141^(1/2)-34)/8) )
x-((2*141^(1/2)-34)/8) = 0 // + (2*141^(1/2)-34)/8
x = (2*141^(1/2)-34)/8
x in { (-2*141^(1/2)-34)/8, (2*141^(1/2)-34)/8 }
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