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D( x )
x = 0
x^2 = 0
x = 0
x = 0
x^2 = 0
x^2 = 0
1*x^2 = 0 // : 1
x^2 = 0
x = 0
x in (-oo:0) U (0:+oo)
4/x+2/x-1+1 = 35/(x^2)-1 // - 35/(x^2)-1
4/x+2/x-(35/(x^2))-1+1+1 = 0
4/x+2/x-35*x^-2-1+1+1 = 0
6*x^-1-35*x^-2+1 = 0
t_1 = x^-1
6*t_1^1-35*t_1^2+1 = 0
6*t_1-35*t_1^2+1 = 0
DELTA = 6^2-(-35*1*4)
DELTA = 176
DELTA > 0
t_1 = (176^(1/2)-6)/(-35*2) or t_1 = (-176^(1/2)-6)/(-35*2)
t_1 = (4*11^(1/2)-6)/(-70) or t_1 = (-4*11^(1/2)-6)/(-70)
t_1 = (4*11^(1/2)-6)/(-70)
x^-1-((4*11^(1/2)-6)/(-70)) = 0
1*x^-1 = (4*11^(1/2)-6)/(-70) // : 1
x^-1 = (4*11^(1/2)-6)/(-70)
-1 < 0
1/(x^1) = (4*11^(1/2)-6)/(-70) // * x^1
1 = ((4*11^(1/2)-6)/(-70))*x^1 // : (4*11^(1/2)-6)/(-70)
-70*(4*11^(1/2)-6)^-1 = x^1
x = -70*(4*11^(1/2)-6)^-1
t_1 = (-4*11^(1/2)-6)/(-70)
x^-1-((-4*11^(1/2)-6)/(-70)) = 0
1*x^-1 = (-4*11^(1/2)-6)/(-70) // : 1
x^-1 = (-4*11^(1/2)-6)/(-70)
-1 < 0
1/(x^1) = (-4*11^(1/2)-6)/(-70) // * x^1
1 = ((-4*11^(1/2)-6)/(-70))*x^1 // : (-4*11^(1/2)-6)/(-70)
-70*(-4*11^(1/2)-6)^-1 = x^1
x = -70*(-4*11^(1/2)-6)^-1
x in { -70*(4*11^(1/2)-6)^-1, -70*(-4*11^(1/2)-6)^-1 }
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