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D( x )
2*x-3 = 0
2*x-3 = 0
2*x-3 = 0
2*x-3 = 0 // + 3
2*x = 3 // : 2
x = 3/2
x in (-oo:3/2) U (3/2:+oo)
(6*x^2-(7*x)+5)/(2*x-3) = 0
(6*x^2-7*x+5)/(2*x-3) = 0
6*x^2-7*x+5 = 0
6*x^2-7*x+5 = 0
DELTA = (-7)^2-(4*5*6)
DELTA = -71
DELTA < 0
1 = 0
1/(2*x-3) = 0
x belongs to the empty set
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