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D( x )
6*x-(12*x^2) = 0
6*x-(12*x^2) = 0
6*x-(12*x^2) = 0
6*x-12*x^2 = 0
6*x-12*x^2 = 0
DELTA = 6^2-(-12*0*4)
DELTA = 36
DELTA > 0
x = (36^(1/2)-6)/(-12*2) or x = (-36^(1/2)-6)/(-12*2)
x = 0 or x = 1/2
x in (-oo:0) U (0:1/2) U (1/2:+oo)
(11^2*x-22)/(6*x-(12*x^2)) = 0
(11^2*x-22)/(6*x-12*x^2) = 0
(121*x-22)/(6*x-12*x^2) = 0
6*x-12*x^2 = 0
6*x*(1-2*x) = 0
1-2*x = 0 // - 1
-2*x = -1 // : -2
x = -1/(-2)
x = 1/2
6*x*(x-1/2) = 0
(121*x-22)/(6*x*(x-1/2)) = 0
121*x-22 = 0 // + 22
121*x = 22 // : 121
x = 22/121
x = 2/11
x = 2/11
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