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x in (-oo:+oo)
((305*x)/235)*(11-x) = 3005 // - 3005
((305*x)/235)*(11-x)-3005 = 0
61/47*x*(11-x)-3005 = 0
61/47*x*(11-x)-3005 = 0
671/47*x-61/47*x^2-3005 = 0
671/47*x-61/47*x^2-3005 = 0
671/47*x-61/47*x^2-3005 = 0
DELTA = (671/47)^2-(-3005*(-61/47)*4)
DELTA = -34011099/2209
DELTA < 0
1 = 0
1 = 0
x belongs to the empty set
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