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D( x )
3*x = 0
x = 0
3*x = 0
3*x = 0
3*x = 0 // : 3
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
2/(3*x)-((9/x)/x)+1 = 0
2/(3*x)-9*x^-2+1 = 0
2/3*x^-1-9*x^-2+1 = 0
t_1 = x^-1
2/3*t_1^1-9*t_1^2+1 = 0
2/3*t_1-9*t_1^2+1 = 0
DELTA = (2/3)^2-(-9*1*4)
DELTA = 328/9
DELTA > 0
t_1 = ((328/9)^(1/2)-2/3)/(-9*2) or t_1 = (-(328/9)^(1/2)-2/3)/(-9*2)
t_1 = ((328/9)^(1/2)-2/3)/(-18) or t_1 = ((328/9)^(1/2)+2/3)/18
t_1 = ((328/9)^(1/2)-2/3)/(-18)
x^-1-(((328/9)^(1/2)-2/3)/(-18)) = 0
1*x^-1 = ((328/9)^(1/2)-2/3)/(-18) // : 1
x^-1 = ((328/9)^(1/2)-2/3)/(-18)
-1 < 0
1/(x^1) = ((328/9)^(1/2)-2/3)/(-18) // * x^1
1 = (((328/9)^(1/2)-2/3)/(-18))*x^1 // : ((328/9)^(1/2)-2/3)/(-18)
-18*((328/9)^(1/2)-2/3)^-1 = x^1
x = -18*((328/9)^(1/2)-2/3)^-1
t_1 = ((328/9)^(1/2)+2/3)/18
x^-1-(((328/9)^(1/2)+2/3)/18) = 0
1*x^-1 = ((328/9)^(1/2)+2/3)/18 // : 1
x^-1 = ((328/9)^(1/2)+2/3)/18
-1 < 0
1/(x^1) = ((328/9)^(1/2)+2/3)/18 // * x^1
1 = (((328/9)^(1/2)+2/3)/18)*x^1 // : ((328/9)^(1/2)+2/3)/18
18*((328/9)^(1/2)+2/3)^-1 = x^1
x = 18*((328/9)^(1/2)+2/3)^-1
x in { -18*((328/9)^(1/2)-2/3)^-1, 18*((328/9)^(1/2)+2/3)^-1 }
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