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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
(8/2)*x+2 = 3/x-1 // - 3/x-1
(8/2)*x-(3/x)+1+2 = 0
(8/2)*x-3*x^-1+1+2 = 0
4*x^1-3*x^-1+3*x^0 = 0
(4*x^2+3*x^1-3*x^0)/(x^1) = 0 // * x^2
x^1*(4*x^2+3*x^1-3*x^0) = 0
x^1
4*x^2+3*x-3 = 0
4*x^2+3*x-3 = 0
DELTA = 3^2-(-3*4*4)
DELTA = 57
DELTA > 0
x = (57^(1/2)-3)/(2*4) or x = (-57^(1/2)-3)/(2*4)
x = (57^(1/2)-3)/8 or x = (-(57^(1/2)+3))/8
x in { (-(57^(1/2)+3))/8, (57^(1/2)-3)/8}
x in { (-(57^(1/2)+3))/8, (57^(1/2)-3)/8 }
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