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D( m )
12/(m^2-m-6) = 0
m = 0
m^2 = 0
m^2-m-6 = 0
12/(m^2-m-6) = 0
12/(m^2-m-6) = 0
m^2-m-6 = 0
m^2-m-6 = 0
DELTA = (-1)^2-(-6*1*4)
DELTA = 25
DELTA > 0
m = (25^(1/2)+1)/(1*2) or m = (1-25^(1/2))/(1*2)
m = 3 or m = -2
(m+2)*(m-3) = 0
12/((m+2)*(m-3)) = 0
12 = 0
m belongs to the empty set
m = 0
m = 0
m^2 = 0
m^2 = 0
1*m^2 = 0 // : 1
m^2 = 0
m = 0
m^2-m-6 = 0
m^2-m-6 = 0
m^2-m-6 = 0
DELTA = (-1)^2-(-6*1*4)
DELTA = 25
DELTA > 0
m = (25^(1/2)+1)/(1*2) or m = (1-25^(1/2))/(1*2)
m = 3 or m = -2
m in (-oo:-2) U (-2:0) U (0:3) U (3:+oo)
((6*m)/(m^2)-(3/m)-4+2)/(12/(m^2-m-6)) = 0
((6*m)/(m^2)-3*m^-1-4+2)/(12/(m^2-m-6)) = 0
((3*m^-1-2)*(m^2-m-6))/12 = 0
m^2-m-6 = 0
m^2-m-6 = 0
DELTA = (-1)^2-(-6*1*4)
DELTA = 25
DELTA > 0
m = (25^(1/2)+1)/(1*2) or m = (1-25^(1/2))/(1*2)
m = 3 or m = -2
(m+2)*(m-3) = 0
((3*m^-1-2)*(m+2)*(m-3))/12 = 0
( 3*m^-1-2 )
3*m^-1 = 2 // : 3
m^-1 = 2/3
-1 < 0
1/(m^1) = 2/3 // * m^1
1 = 2/3*m^1 // : 2/3
3/2 = m^1
m = 3/2
( m+2 )
m+2 = 0 // - 2
m = -2
( m-3 )
m-3 = 0 // + 3
m = 3
m in { -2}
m in { 3}
m = 3/2
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