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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
(2/3)*x^6-(5*x^-2) = 0
(2/3)*x^6-5*x^-2 = 0
2/3*x^6-5*x^-2 = 0
t_1 = x^2
2/3*t_1^3-5*t_1^-1 = 0
t_1^-1*(2/3*t_1^4-5) = 0
2/3*t_1^4 = 5 // : 2/3
t_1^4 = 15/2
t_1^4 = 15/2 // ^ 1/4
abs(t_1) = (15/2)^(1/4)
t_1 = (15/2)^(1/4) or t_1 = -(15/2)^(1/4)
1/t_1 = 0
1*t_1^-1 = 0 // : 1
t_1^-1 = 0
t_1 naleu017Cy do O
t_1 = (15/2)^(1/4)
x^2-(15/2)^(1/4) = 0
1*x^2 = (15/2)^(1/4) // : 1
x^2 = (15/2)^(1/4)
x^2 = (15/2)^(1/4) // ^ 1/2
abs(x) = (15/2)^(1/8)
x = (15/2)^(1/8) or x = -(15/2)^(1/8)
t_1 = -(15/2)^(1/4)
x^2+(15/2)^(1/4) = 0
1*x^2 = -(15/2)^(1/4) // : 1
x^2 = -(15/2)^(1/4)
x in { (15/2)^(1/8), -(15/2)^(1/8) }
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