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D( x )
x^2+2*x-24 = 0
x^2+2*x-24 = 0
x^2+2*x-24 = 0
x^2+2*x-24 = 0
DELTA = 2^2-(-24*1*4)
DELTA = 100
DELTA > 0
x = (100^(1/2)-2)/(1*2) or x = (-100^(1/2)-2)/(1*2)
x = 4 or x = -6
x in (-oo:-6) U (-6:4) U (4:+oo)
(4*x^3-(39*x)+35)/(x^2+2*x-24) = 0
(4*x^3-39*x+35)/(x^2+2*x-24) = 0
4*x^3-39*x+35 = 0
4*x^3-39*x+35 = 0
{ 1, -1, 5, -5, 7, -7, 35, -35 }
1
x = 1
4*x^3-39*x+35 = 0
1
x-1
4*x^2+4*x-35
4*x^3-39*x+35
x-1
4*x^2-4*x^3
4*x^2-39*x+35
4*x-4*x^2
35-35*x
35*x-35
0
4*x^2+4*x-35 = 0
DELTA = 4^2-(-35*4*4)
DELTA = 576
DELTA > 0
x = (576^(1/2)-4)/(2*4) or x = (-576^(1/2)-4)/(2*4)
x = 5/2 or x = -7/2
x in { -7/2, 5/2, 1}
(x+7/2)*(x-5/2)*(x-1) = 0
x^2+2*x-24 = 0
x^2+2*x-24 = 0
DELTA = 2^2-(-24*1*4)
DELTA = 100
DELTA > 0
x = (100^(1/2)-2)/(1*2) or x = (-100^(1/2)-2)/(1*2)
x = 4 or x = -6
(x+6)*(x-4) = 0
((x+7/2)*(x-5/2)*(x-1))/((x+6)*(x-4)) = 0
( x+7/2 )
x+7/2 = 0 // - 7/2
x = -7/2
( x-1 )
x-1 = 0 // + 1
x = 1
( x-5/2 )
x-5/2 = 0 // + 5/2
x = 5/2
x in { -7/2, 1, 5/2 }
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