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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
(3/5)*x^0-2 = -2 // + 2
(3/5)*x^0-2+2 = 0
3/5-2+2 = 0
3/5 = 0
x belongs to the empty set
x belongs to the empty set
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