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D( x )
x^2 = 0
x^2 = 0
x^2 = 0
1*x^2 = 0 // : 1
x^2 = 0
x = 0
x in (-oo:0) U (0:+oo)
(x^6-(5*x^4)-x^2)/(x^2) = 0
(x^6-5*x^4-x^2)/(x^2) = 0
(x^6-(5*x^4)-x^2)/(x^2) = 0 // * x^2
x^6-(5*x^4)-x^2 = 0
x^6-5*x^4-x^2 = 0
t_1 = x^2
1*t_1^3-5*t_1^2-1*t_1^1 = 0
t_1^3-5*t_1^2-t_1 = 0
t_1*(t_1^2-5*t_1-1) = 0
t_1^2-5*t_1-1 = 0
DELTA = (-5)^2-(-1*1*4)
DELTA = 29
DELTA > 0
t_1 = (29^(1/2)+5)/(1*2) or t_1 = (5-29^(1/2))/(1*2)
t_1 = (29^(1/2)+5)/2 or t_1 = (5-29^(1/2))/2
t_1 = 0
t_1 = 0
t_1 = (5-29^(1/2))/2
x^2-((5-29^(1/2))/2) = 0
1*x^2 = (5-29^(1/2))/2 // : 1
x^2 = (5-29^(1/2))/2
t_1 = (29^(1/2)+5)/2
x^2-((29^(1/2)+5)/2) = 0
1*x^2 = (29^(1/2)+5)/2 // : 1
x^2 = (29^(1/2)+5)/2
x^2 = (29^(1/2)+5)/2 // ^ 1/2
abs(x) = ((29^(1/2)+5)^(1/2))/(2^(1/2))
x = ((29^(1/2)+5)^(1/2))/(2^(1/2)) or x = -(((29^(1/2)+5)^(1/2))/(2^(1/2)))
t_1 = 0
x^2+0 = 0
x^2 = 0
1*x^2 = 0 // : 1
x^2 = 0
x = 0
x in { 0}
x in { ((29^(1/2)+5)^(1/2))/(2^(1/2)), -(((29^(1/2)+5)^(1/2))/(2^(1/2))) }
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