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t in (-oo:+oo)
(9*t^2-t+1/2)*(2*t^2+t-4) = 0
9*t^2-t+1/2 = 0
9*t^2-t+1/2 = 0
DELTA = (-1)^2-(1/2*4*9)
DELTA = -17
DELTA < 0
1 = 0
2*t^2+t-4 = 0
2*t^2+t-4 = 0
DELTA = 1^2-(-4*2*4)
DELTA = 33
DELTA > 0
t = (33^(1/2)-1)/(2*2) or t = (-33^(1/2)-1)/(2*2)
t = (33^(1/2)-1)/4 or t = (-(33^(1/2)+1))/4
(t+(33^(1/2)+1)/4)*(t-((33^(1/2)-1)/4)) = 0
(t+(33^(1/2)+1)/4)*(t-((33^(1/2)-1)/4)) = 0
( t+(33^(1/2)+1)/4 )
t+(33^(1/2)+1)/4 = 0 // - (33^(1/2)+1)/4
t = -((33^(1/2)+1)/4)
( t-((33^(1/2)-1)/4) )
t-((33^(1/2)-1)/4) = 0 // + (33^(1/2)-1)/4
t = (33^(1/2)-1)/4
t in { -((33^(1/2)+1)/4), (33^(1/2)-1)/4 }
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