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D( x )
x^2-(12*x)-32 = 0
x^2-(12*x)-32 = 0
x^2-(12*x)-32 = 0
x^2-12*x-32 = 0
x^2-12*x-32 = 0
DELTA = (-12)^2-(-32*1*4)
DELTA = 272
DELTA > 0
x = (272^(1/2)+12)/(1*2) or x = (12-272^(1/2))/(1*2)
x = (4*17^(1/2)+12)/2 or x = (12-4*17^(1/2))/2
x in (-oo:(12-4*17^(1/2))/2) U ((12-4*17^(1/2))/2:(4*17^(1/2)+12)/2) U ((4*17^(1/2)+12)/2:+oo)
(x^2)/(x^2-(12*x)-32) = 0
(x^2)/(x^2-12*x-32) = 0
x^2-12*x-32 = 0
x^2-12*x-32 = 0
DELTA = (-12)^2-(-32*1*4)
DELTA = 272
DELTA > 0
x = (272^(1/2)+12)/(1*2) or x = (12-272^(1/2))/(1*2)
x = (4*17^(1/2)+12)/2 or x = (12-4*17^(1/2))/2
(x-((12-4*17^(1/2))/2))*(x-((4*17^(1/2)+12)/2)) = 0
(x^2)/((x-((12-4*17^(1/2))/2))*(x-((4*17^(1/2)+12)/2))) = 0
1*x^2 = 0 // : 1
x^2 = 0
x = 0
x = 0
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