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v in (-oo:+oo)
v*((12*v^3+18*v^2+3*v)/6) = 0
(v*(12*v^3+18*v^2+3*v))/6 = 0
12*v^3+18*v^2+3*v = 0
3*v*(4*v^2+6*v+1) = 0
4*v^2+6*v+1 = 0
DELTA = 6^2-(1*4*4)
DELTA = 20
DELTA > 0
v = (20^(1/2)-6)/(2*4) or v = (-20^(1/2)-6)/(2*4)
v = (2*5^(1/2)-6)/8 or v = (-2*5^(1/2)-6)/8
3*v*(v-((-2*5^(1/2)-6)/8))*(v-((2*5^(1/2)-6)/8)) = 0
(3*v*v*(v-((-2*5^(1/2)-6)/8))*(v-((2*5^(1/2)-6)/8)))/6 = 0
( 3*v )
3*v = 0 // : 3
v = 0
( v-((-2*5^(1/2)-6)/8) )
v-((-2*5^(1/2)-6)/8) = 0 // + (-2*5^(1/2)-6)/8
v = (-2*5^(1/2)-6)/8
( v-((2*5^(1/2)-6)/8) )
v-((2*5^(1/2)-6)/8) = 0 // + (2*5^(1/2)-6)/8
v = (2*5^(1/2)-6)/8
( v )
v = 0
v in { 0, (-2*5^(1/2)-6)/8, (2*5^(1/2)-6)/8, 0 }
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