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x in (-oo:+oo)
(-1/11)*x^2+3*x+2 = 0
3*x-1/11*x^2+2 = 0
DELTA = 3^2-(-1/11*2*4)
DELTA = 107/11
DELTA > 0
x = ((107/11)^(1/2)-3)/(-1/11*2) or x = (-(107/11)^(1/2)-3)/(-1/11*2)
x = -11/2*((107/11)^(1/2)-3) or x = 11/2*((107/11)^(1/2)+3)
x in { -11/2*((107/11)^(1/2)-3), 11/2*((107/11)^(1/2)+3) }
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