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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
8/x-3 < -2 // + 2
8/x-3+2 < 0
8*x^-1 < 1
8*x^-1 < 1 // : 8
x^-1 < 1/8
1/(x^1) < 1/8
x <> 0
1/(x^1) < 1/8 // * x^2
(x^2)/(x^1) < 1/8*x^2
x^1 < 1/8*x^2
x-1/8*x^2 < 0
x^1*(1-1/8*x) < 0
x < 0
-(abs(x))^1*(1/8*(abs(x))^1+1) < 0 // : -(abs(x))^1
1/8*(abs(x))^1+1 > 0
1/8*(abs(x))^1 > -1 // : 1/8
(abs(x))^1 > -1/1/8
(abs(x))^1 > -8 // ^ 1/1
abs(x) > (-8)^(1/1)
abs(x) > -8
x in (-oo:0)
x < 0
x > 0
x^1*(1-(1/8*x^1)) < 0 // : x^1
1-(1/8*x^1) < 0
1 < 1/8*x^1 // : 1/8
1/1/8 < x^1 // ^ 1/1
(1/1/8)^(1/1) < x
x in (8:+oo)
x > 0
x in (-oo:0) U (8:+oo)
x in (-oo:0) U (8:+oo)
(-oo:0) U (8:+oo)
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