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m in (-oo:+oo)
m^2*((6*m^3+4*m^2+12*m)/2) = 0
(m^2*(6*m^3+4*m^2+12*m))/2 = 0
6*m^3+4*m^2+12*m = 0
2*m*(3*m^2+2*m+6) = 0
3*m^2+2*m+6 = 0
DELTA = 2^2-(3*4*6)
DELTA = -68
DELTA < 0
2*m = 0
(2*m*m^2)/2 = 0
( 2*m )
2*m = 0 // : 2
m = 0
( m^2 )
1*m^2 = 0 // : 1
m^2 = 0
m = 0
m in { 0, 0 }
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