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w in (-oo:+oo)
w*((3*(w+4))/4) = -5/4 // + -5/4
w*((3*(w+4))/4)-(-5/4) = 0
w*((3*(w+4))/4)+5/4 = 0
(3*w*(w+4))/4+5/4 = 0
3*w*(w+4)+5 = 0
3*w^2+12*w+5 = 0
3*w^2+12*w+5 = 0
3*w^2+12*w+5 = 0
DELTA = 12^2-(3*4*5)
DELTA = 84
DELTA > 0
w = (84^(1/2)-12)/(2*3) or w = (-84^(1/2)-12)/(2*3)
w = (2*21^(1/2)-12)/6 or w = (-2*21^(1/2)-12)/6
(w-((-2*21^(1/2)-12)/6))*(w-((2*21^(1/2)-12)/6)) = 0
((w-((-2*21^(1/2)-12)/6))*(w-((2*21^(1/2)-12)/6)))/4 = 0
((w-((-2*21^(1/2)-12)/6))*(w-((2*21^(1/2)-12)/6)))/4 = 0 // * 4
(w-((-2*21^(1/2)-12)/6))*(w-((2*21^(1/2)-12)/6)) = 0
( w-((-2*21^(1/2)-12)/6) )
w-((-2*21^(1/2)-12)/6) = 0 // + (-2*21^(1/2)-12)/6
w = (-2*21^(1/2)-12)/6
( w-((2*21^(1/2)-12)/6) )
w-((2*21^(1/2)-12)/6) = 0 // + (2*21^(1/2)-12)/6
w = (2*21^(1/2)-12)/6
w in { (-2*21^(1/2)-12)/6, (2*21^(1/2)-12)/6 }
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