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a in (-oo:+oo)
((3*(a+4))/64)*(2*a-3) = 61/2 // - 61/2
((3*(a+4))/64)*(2*a-3)-(61/2) = 0
((3*(a+4))/64)*(2*a-3)-61/2 = 0
(3*(a+4)*(2*a-3))/64-61/2 = 0
(2*3*(a+4)*(2*a-3))/(2*64)+(-61*64)/(2*64) = 0
2*3*(a+4)*(2*a-3)-61*64 = 0
12*a^2+30*a-3976 = 0
12*a^2+30*a-3976 = 0
2*(6*a^2+15*a-1988) = 0
6*a^2+15*a-1988 = 0
DELTA = 15^2-(-1988*4*6)
DELTA = 47937
DELTA > 0
a = (47937^(1/2)-15)/(2*6) or a = (-47937^(1/2)-15)/(2*6)
a = (29*57^(1/2)-15)/12 or a = (-29*57^(1/2)-15)/12
2*(a-((-29*57^(1/2)-15)/12))*(a-((29*57^(1/2)-15)/12)) = 0
(2*(a-((-29*57^(1/2)-15)/12))*(a-((29*57^(1/2)-15)/12)))/(2*64) = 0
(2*(a-((-29*57^(1/2)-15)/12))*(a-((29*57^(1/2)-15)/12)))/(2*64) = 0 // * 2*64
2*(a-((-29*57^(1/2)-15)/12))*(a-((29*57^(1/2)-15)/12)) = 0
( a-((-29*57^(1/2)-15)/12) )
a-((-29*57^(1/2)-15)/12) = 0 // + (-29*57^(1/2)-15)/12
a = (-29*57^(1/2)-15)/12
( a-((29*57^(1/2)-15)/12) )
a-((29*57^(1/2)-15)/12) = 0 // + (29*57^(1/2)-15)/12
a = (29*57^(1/2)-15)/12
a in { (-29*57^(1/2)-15)/12, (29*57^(1/2)-15)/12 }
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