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D( x )
x^2 = 0
x^2 = 0
x^2 = 0
1*x^2 = 0 // : 1
x^2 = 0
x = 0
x in (-oo:0) U (0:+oo)
(3/2)*x+4*x-(x/(x^2))+4+4 = 0
(3/2)*x+4*x-x^-1+4+4 = 0
11/2*x^1-1*x^-1+8*x^0 = 0
(11/2*x^2+8*x^1-1*x^0)/(x^1) = 0 // * x^2
x^1*(11/2*x^2+8*x^1-1*x^0) = 0
x^1
(11/2)*x^2+8*x-1 = 0
(11/2)*x^2+8*x-1 = 0
DELTA = 8^2-(-1*4*(11/2))
DELTA = 86
DELTA > 0
x = (86^(1/2)-8)/(2*(11/2)) or x = (-86^(1/2)-8)/(2*(11/2))
x = (86^(1/2)-8)/11 or x = (-(86^(1/2)+8))/11
x in { (-(86^(1/2)+8))/11, (86^(1/2)-8)/11}
x in { (-(86^(1/2)+8))/11, (86^(1/2)-8)/11 }
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