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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)
3/x+(5*x)/x-2+2 = 4/(x^2)-4 // - 4/(x^2)-4
3/x-(4/(x^2))+(5*x)/x-2+2+4 = 0
3/x-4*x^-2+(5*x)/x-2+2+4 = 0
3*x^-1-4*x^-2+9 = 0
t_1 = x^-1
3*t_1^1-4*t_1^2+9 = 0
3*t_1-4*t_1^2+9 = 0
DELTA = 3^2-(-4*4*9)
DELTA = 153
DELTA > 0
t_1 = (153^(1/2)-3)/(-4*2) or t_1 = (-153^(1/2)-3)/(-4*2)
t_1 = (3*17^(1/2)-3)/(-8) or t_1 = (-3*17^(1/2)-3)/(-8)
t_1 = (3*17^(1/2)-3)/(-8)
x^-1-((3*17^(1/2)-3)/(-8)) = 0
1*x^-1 = (3*17^(1/2)-3)/(-8) // : 1
x^-1 = (3*17^(1/2)-3)/(-8)
-1 < 0
1/(x^1) = (3*17^(1/2)-3)/(-8) // * x^1
1 = ((3*17^(1/2)-3)/(-8))*x^1 // : (3*17^(1/2)-3)/(-8)
-8*(3*17^(1/2)-3)^-1 = x^1
x = -8*(3*17^(1/2)-3)^-1
t_1 = (-3*17^(1/2)-3)/(-8)
x^-1-((-3*17^(1/2)-3)/(-8)) = 0
1*x^-1 = (-3*17^(1/2)-3)/(-8) // : 1
x^-1 = (-3*17^(1/2)-3)/(-8)
-1 < 0
1/(x^1) = (-3*17^(1/2)-3)/(-8) // * x^1
1 = ((-3*17^(1/2)-3)/(-8))*x^1 // : (-3*17^(1/2)-3)/(-8)
-8*(-3*17^(1/2)-3)^-1 = x^1
x = -8*(-3*17^(1/2)-3)^-1
x in { -8*(3*17^(1/2)-3)^-1, -8*(-3*17^(1/2)-3)^-1 }
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