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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
8/x+22 = (2/3)*x // - (2/3)*x
8/x-((2/3)*x)+22 = 0
(-2/3)*x+8/x+22 = 0
8*x^-1-2/3*x^1+22*x^0 = 0
(22*x^1-2/3*x^2+8*x^0)/(x^1) = 0 // * x^2
x^1*(22*x^1-2/3*x^2+8*x^0) = 0
x^1
(-2/3)*x^2+22*x+8 = 0
(-2/3)*x^2+22*x+8 = 0
DELTA = 22^2-(4*8*(-2/3))
DELTA = 1516/3
DELTA > 0
x = ((1516/3)^(1/2)-22)/(2*(-2/3)) or x = (-(1516/3)^(1/2)-22)/(2*(-2/3))
x = -3/4*((1516/3)^(1/2)-22) or x = 3/4*((1516/3)^(1/2)+22)
x in { -3/4*((1516/3)^(1/2)-22), 3/4*((1516/3)^(1/2)+22)}
x in { -3/4*((1516/3)^(1/2)-22), 3/4*((1516/3)^(1/2)+22) }
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