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D( x )
x = 0
6/x = 0
x = 0
x = 0
6/x = 0
6/x = 0
6*x^-1 = 0 // : 6
x^-1 = 0
x naleu017Cy do O
x in (-oo:0) U (0:+oo)
(3/x-2)/(6/x)+5 = 0
(3*x^-1-2)/(6*x^-1)+5 = 0
(3*x^-1-2)/(6*x^-1)+(5*6*x^-1)/(6*x^-1) = 0
3*x^-1+5*6*x^-1-2 = 0
33*x^-1-2 = 0
(33*x^-1-2)/(6*x^-1) = 0
(33*x^-1-2)/(6*x^-1) = 0 // * 6/x
33*x^-1-2 = 0
33*x^-1 = 2 // : 33
x^-1 = 2/33
-1 < 0
1/(x^1) = 2/33 // * x^1
1 = 2/33*x^1 // : 2/33
33/2 = x^1
x = 33/2
x = 33/2
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