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D( x )
2*(x-10) = 0
x-10 = 0
2*(x-10) = 0
2*(x-10) = 0
( 2 )
2 = 0
x belongs to the empty set
( x-10 )
x-10 = 0 // + 10
x = 10
x-10 = 0
x-10 = 0
x-10 = 0 // + 10
x = 10
x in (-oo:10) U (10:+oo)
(3*x)/(2*(x-10))-(1/2) = 4/(x-10) // - 4/(x-10)
(3*x)/(2*(x-10))-(4/(x-10))-(1/2) = 0
(3*x)/(2*(x-10))-4*(x-10)^-1-1/2 = 0
(3*x)/(2*(x-10))-4/(x-10)-1/2 = 0
(3*x)/(2*(x-10))+(-4*2)/(2*(x-10))+(-1*(x-10))/(2*(x-10)) = 0
3*x-1*(x-10)-4*2 = 0
3*x-x-8+10 = 0
2*x+2 = 0
(2*x+2)/(2*(x-10)) = 0
(2*x+2)/(2*(x-10)) = 0 // * 2*(x-10)
2*x+2 = 0
2*x+2 = 0 // - 2
2*x = -2 // : 2
x = -2/2
x = -1
x = -1
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