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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
2/x-((1/5)*x) = (3/3)*x-3 // - (3/3)*x-3
2/x-((1/5)*x)-((3/3)*x)+3 = 0
(-1/5)*x-x+2/x+3 = 0
2*x^-1-6/5*x^1+3*x^0 = 0
(3*x^1-6/5*x^2+2*x^0)/(x^1) = 0 // * x^2
x^1*(3*x^1-6/5*x^2+2*x^0) = 0
x^1
(-6/5)*x^2+3*x+2 = 0
(-6/5)*x^2+3*x+2 = 0
DELTA = 3^2-(2*4*(-6/5))
DELTA = 93/5
DELTA > 0
x = ((93/5)^(1/2)-3)/(2*(-6/5)) or x = (-(93/5)^(1/2)-3)/(2*(-6/5))
x = -5/12*((93/5)^(1/2)-3) or x = 5/12*((93/5)^(1/2)+3)
x in { -5/12*((93/5)^(1/2)-3), 5/12*((93/5)^(1/2)+3)}
x in { -5/12*((93/5)^(1/2)-3), 5/12*((93/5)^(1/2)+3) }
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