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