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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)
16/(x^2)-(2/x)-16+4 = 3/x+4 // - 3/x+4
16/(x^2)-(2/x)-(3/x)-16-4+4 = 0
16/(x^2)-2*x^-1-3*x^-1-16-4+4 = 0
16*x^-2-5*x^-1-16 = 0
t_1 = x^-1
16*t_1^2-5*t_1^1-16 = 0
16*t_1^2-5*t_1-16 = 0
DELTA = (-5)^2-(-16*4*16)
DELTA = 1049
DELTA > 0
t_1 = (1049^(1/2)+5)/(2*16) or t_1 = (5-1049^(1/2))/(2*16)
t_1 = (1049^(1/2)+5)/32 or t_1 = (5-1049^(1/2))/32
t_1 = (5-1049^(1/2))/32
x^-1-((5-1049^(1/2))/32) = 0
1*x^-1 = (5-1049^(1/2))/32 // : 1
x^-1 = (5-1049^(1/2))/32
-1 < 0
1/(x^1) = (5-1049^(1/2))/32 // * x^1
1 = ((5-1049^(1/2))/32)*x^1 // : (5-1049^(1/2))/32
32*(5-1049^(1/2))^-1 = x^1
x = 32*(5-1049^(1/2))^-1
t_1 = (1049^(1/2)+5)/32
x^-1-((1049^(1/2)+5)/32) = 0
1*x^-1 = (1049^(1/2)+5)/32 // : 1
x^-1 = (1049^(1/2)+5)/32
-1 < 0
1/(x^1) = (1049^(1/2)+5)/32 // * x^1
1 = ((1049^(1/2)+5)/32)*x^1 // : (1049^(1/2)+5)/32
32*(1049^(1/2)+5)^-1 = x^1
x = 32*(1049^(1/2)+5)^-1
x in { 32*(5-1049^(1/2))^-1, 32*(1049^(1/2)+5)^-1 }
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