a-a^2-a/2+a^2/4=-8/3
3/4a^2-a/2-8/3=0
9a^2-6a-32=0
(3+-sqrt(9+9*32))/9
(3+-3sqrt(33))/9
a1=(1+sqrt(33))/3
a2=(1-sqrt(33))/3
a-a^2-a/2+a^2/4=-8/3
3/4a^2-a/2-8/3=0
9a^2-6a-32=0
(3+-sqrt(9+9*32))/9
(3+-3sqrt(33))/9
a1=(1+sqrt(33))/3
a2=(1-sqrt(33))/3