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x in (-oo:+oo)
((x-8)^2)/5 = 4 // - 4
((x-8)^2)/5-4 = 0
((x-8)^2)/5+(-4*5)/5 = 0
(x-8)^2-4*5 = 0
x^2-16*x+44 = 0
x^2-16*x+44 = 0
x^2-16*x+44 = 0
DELTA = (-16)^2-(1*4*44)
DELTA = 80
DELTA > 0
x = (80^(1/2)+16)/(1*2) or x = (16-80^(1/2))/(1*2)
x = (4*5^(1/2)+16)/2 or x = (16-4*5^(1/2))/2
(x-((16-4*5^(1/2))/2))*(x-((4*5^(1/2)+16)/2)) = 0
((x-((16-4*5^(1/2))/2))*(x-((4*5^(1/2)+16)/2)))/5 = 0
((x-((16-4*5^(1/2))/2))*(x-((4*5^(1/2)+16)/2)))/5 = 0 // * 5
(x-((16-4*5^(1/2))/2))*(x-((4*5^(1/2)+16)/2)) = 0
( x-((16-4*5^(1/2))/2) )
x-((16-4*5^(1/2))/2) = 0 // + (16-4*5^(1/2))/2
x = (16-4*5^(1/2))/2
( x-((4*5^(1/2)+16)/2) )
x-((4*5^(1/2)+16)/2) = 0 // + (4*5^(1/2)+16)/2
x = (4*5^(1/2)+16)/2
x in { (16-4*5^(1/2))/2, (4*5^(1/2)+16)/2 }
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