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x in (-oo:+oo)
((x+7)^2)/3 = 4 // - 4
((x+7)^2)/3-4 = 0
((x+7)^2)/3+(-4*3)/3 = 0
(x+7)^2-4*3 = 0
x^2+14*x+37 = 0
x^2+14*x+37 = 0
x^2+14*x+37 = 0
DELTA = 14^2-(1*4*37)
DELTA = 48
DELTA > 0
x = (48^(1/2)-14)/(1*2) or x = (-48^(1/2)-14)/(1*2)
x = (4*3^(1/2)-14)/2 or x = (-4*3^(1/2)-14)/2
(x-((-4*3^(1/2)-14)/2))*(x-((4*3^(1/2)-14)/2)) = 0
((x-((-4*3^(1/2)-14)/2))*(x-((4*3^(1/2)-14)/2)))/3 = 0
((x-((-4*3^(1/2)-14)/2))*(x-((4*3^(1/2)-14)/2)))/3 = 0 // * 3
(x-((-4*3^(1/2)-14)/2))*(x-((4*3^(1/2)-14)/2)) = 0
( x-((-4*3^(1/2)-14)/2) )
x-((-4*3^(1/2)-14)/2) = 0 // + (-4*3^(1/2)-14)/2
x = (-4*3^(1/2)-14)/2
( x-((4*3^(1/2)-14)/2) )
x-((4*3^(1/2)-14)/2) = 0 // + (4*3^(1/2)-14)/2
x = (4*3^(1/2)-14)/2
x in { (-4*3^(1/2)-14)/2, (4*3^(1/2)-14)/2 }
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