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x in (-oo:+oo)
(-1/3)*(x-4)^2+10 = 0
10-1/3*(x-4)^2 = 0
10-1/3*(x-4)^2 = 0
8/3*x-1/3*x^2+14/3 = 0
8/3*x-1/3*x^2+14/3 = 0
1/3*(8*x-x^2+14) = 0
8*x-x^2+14 = 0
DELTA = 8^2-(-1*4*14)
DELTA = 120
DELTA > 0
x = (120^(1/2)-8)/(-1*2) or x = (-120^(1/2)-8)/(-1*2)
x = (2*30^(1/2)-8)/(-2) or x = (-2*30^(1/2)-8)/(-2)
1/3*(x-((2*30^(1/2)-8)/(-2)))*(x-((-2*30^(1/2)-8)/(-2))) = 0
1/3*(x-((2*30^(1/2)-8)/(-2)))*(x-((-2*30^(1/2)-8)/(-2))) = 0
( x-((-2*30^(1/2)-8)/(-2)) )
x-((-2*30^(1/2)-8)/(-2)) = 0 // + (-2*30^(1/2)-8)/(-2)
x = (-2*30^(1/2)-8)/(-2)
( x-((2*30^(1/2)-8)/(-2)) )
x-((2*30^(1/2)-8)/(-2)) = 0 // + (2*30^(1/2)-8)/(-2)
x = (2*30^(1/2)-8)/(-2)
x in { (-2*30^(1/2)-8)/(-2), (2*30^(1/2)-8)/(-2) }
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