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h in (-oo:+oo)
8-(((4*h)/3)*(h-4)) = 0
(-4/3)*h*(h-4)+8 = 0
8-4/3*h*(h-4) = 0
8-4/3*h*(h-4) = 0
16/3*h-4/3*h^2+8 = 0
16/3*h-4/3*h^2+8 = 0
4*(4/3*h-1/3*h^2+2) = 0
4/3*h-1/3*h^2+2 = 0
DELTA = (4/3)^2-(-1/3*2*4)
DELTA = 40/9
DELTA > 0
h = ((40/9)^(1/2)-4/3)/(-1/3*2) or h = (-(40/9)^(1/2)-4/3)/(-1/3*2)
h = -3/2*((40/9)^(1/2)-4/3) or h = 3/2*((40/9)^(1/2)+4/3)
4*(h+3/2*((40/9)^(1/2)-4/3))*(h-3/2*((40/9)^(1/2)+4/3)) = 0
4*(h+3/2*((40/9)^(1/2)-4/3))*(h-3/2*((40/9)^(1/2)+4/3)) = 0
( 4 )
4 = 0
h belongs to the empty set
( h+3/2*((40/9)^(1/2)-4/3) )
h+3/2*((40/9)^(1/2)-4/3) = 0 // - 3/2*((40/9)^(1/2)-4/3)
h = -(3/2*((40/9)^(1/2)-4/3))
h = -3/2*((40/9)^(1/2)-4/3)
( h-3/2*((40/9)^(1/2)+4/3) )
h-3/2*((40/9)^(1/2)+4/3) = 0 // + -3/2*((40/9)^(1/2)+4/3)
h = -(-3/2*((40/9)^(1/2)+4/3))
h = 3/2*((40/9)^(1/2)+4/3)
h in { -3/2*((40/9)^(1/2)-4/3), 3/2*((40/9)^(1/2)+4/3) }
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