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x in (-oo:+oo)
((5*x+2)^2)/3 = 64 // - 64
((5*x+2)^2)/3-64 = 0
((5*x+2)^2)/3+(-64*3)/3 = 0
(5*x+2)^2-64*3 = 0
25*x^2+20*x-188 = 0
25*x^2+20*x-188 = 0
25*x^2+20*x-188 = 0
DELTA = 20^2-(-188*4*25)
DELTA = 19200
DELTA > 0
x = (19200^(1/2)-20)/(2*25) or x = (-19200^(1/2)-20)/(2*25)
x = (80*3^(1/2)-20)/50 or x = (-80*3^(1/2)-20)/50
(x-((-80*3^(1/2)-20)/50))*(x-((80*3^(1/2)-20)/50)) = 0
((x-((-80*3^(1/2)-20)/50))*(x-((80*3^(1/2)-20)/50)))/3 = 0
((x-((-80*3^(1/2)-20)/50))*(x-((80*3^(1/2)-20)/50)))/3 = 0 // * 3
(x-((-80*3^(1/2)-20)/50))*(x-((80*3^(1/2)-20)/50)) = 0
( x-((-80*3^(1/2)-20)/50) )
x-((-80*3^(1/2)-20)/50) = 0 // + (-80*3^(1/2)-20)/50
x = (-80*3^(1/2)-20)/50
( x-((80*3^(1/2)-20)/50) )
x-((80*3^(1/2)-20)/50) = 0 // + (80*3^(1/2)-20)/50
x = (80*3^(1/2)-20)/50
x in { (-80*3^(1/2)-20)/50, (80*3^(1/2)-20)/50 }
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