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D( x )
x = 0
x = 0
x = 0
x in (-oo:0) U (0:+oo)
2*x^2+16*x+((24/3)*x^2)/x+6 = 0
2*x^2+24*x+6 = 0
DELTA = 24^2-(2*4*6)
DELTA = 528
DELTA > 0
x = (528^(1/2)-24)/(2*2) or x = (-528^(1/2)-24)/(2*2)
x = (4*33^(1/2)-24)/4 or x = (-4*33^(1/2)-24)/4
x in { (-4*33^(1/2)-24)/4, (4*33^(1/2)-24)/4 }
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