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x in (-oo:+oo)
((x-10)^2)/5 = ((9*x)^1)/5 // - ((9*x)^1)/5
((x-10)^2)/5-(((9*x)^1)/5) = 0
((x-10)^2)/5+(-9/5)*x = 0
((x-10)^2)/5+(-9*x)/5 = 0
(x-10)^2-9*x = 0
x^2-29*x+100 = 0
x^2-29*x+100 = 0
x^2-29*x+100 = 0
DELTA = (-29)^2-(1*4*100)
DELTA = 441
DELTA > 0
x = (441^(1/2)+29)/(1*2) or x = (29-441^(1/2))/(1*2)
x = 25 or x = 4
(x-4)*(x-25) = 0
((x-4)*(x-25))/5 = 0
((x-4)*(x-25))/5 = 0 // * 5
(x-4)*(x-25) = 0
( x-25 )
x-25 = 0 // + 25
x = 25
( x-4 )
x-4 = 0 // + 4
x = 4
x in { 25, 4 }
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