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x in (-oo:+oo)
(1/172)*(x-1330)^2+1980 = 0
1/172*(x-1330)^2+1980 = 0
1/172*(x-1330)^2+1980 = 0
1/172*x^2-665/43*x+527365/43 = 0
1/172*x^2-665/43*x+527365/43 = 0
1/43*(1/4*x^2-665*x+527365) = 0
1/4*x^2-665*x+527365 = 0
DELTA = (-665)^2-(1/4*4*527365)
DELTA = -85140
DELTA < 0
1/43 = 0
1/43 = 0
1/43 = 0 // * 43
1 = 0
x belongs to the empty set
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