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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)
2/x+3/(x^2)-4-2 = 13/5 // - 13/5
2/x+3/(x^2)-(13/5)-4-2 = 0
2/x+3/(x^2)-13/5-4-2 = 0
2*x^-1+3*x^-2-43/5 = 0
t_1 = x^-1
3*t_1^2+2*t_1^1-43/5 = 0
3*t_1^2+2*t_1-43/5 = 0
DELTA = 2^2-(-43/5*3*4)
DELTA = 536/5
DELTA > 0
t_1 = ((536/5)^(1/2)-2)/(2*3) or t_1 = (-(536/5)^(1/2)-2)/(2*3)
t_1 = ((536/5)^(1/2)-2)/6 or t_1 = (-((536/5)^(1/2)+2))/6
t_1 = (-((536/5)^(1/2)+2))/6
x^-1-((-((536/5)^(1/2)+2))/6) = 0
x^-1+(1/6)*((536/5)^(1/2)+2) = 0
1*x^-1 = -(1/6*((536/5)^(1/2)+2)) // : 1
x^-1 = -1/6*((536/5)^(1/2)+2)
-1 < 0
1/(x^1) = -1/6*((536/5)^(1/2)+2) // * x^1
1 = -1/6*((536/5)^(1/2)+2)*x^1 // : -1/6*((536/5)^(1/2)+2)
-6*((536/5)^(1/2)+2)^-1 = x^1
x = -6*((536/5)^(1/2)+2)^-1
t_1 = ((536/5)^(1/2)-2)/6
x^-1-(((536/5)^(1/2)-2)/6) = 0
1*x^-1 = ((536/5)^(1/2)-2)/6 // : 1
x^-1 = ((536/5)^(1/2)-2)/6
-1 < 0
1/(x^1) = ((536/5)^(1/2)-2)/6 // * x^1
1 = (((536/5)^(1/2)-2)/6)*x^1 // : ((536/5)^(1/2)-2)/6
6*((536/5)^(1/2)-2)^-1 = x^1
x = 6*((536/5)^(1/2)-2)^-1
x in { -6*((536/5)^(1/2)+2)^-1, 6*((536/5)^(1/2)-2)^-1 }
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