-x^2/10+9x/10+11/5

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Solution for -x^2/10+9x/10+11/5 equation: 


x in (-oo:+oo)

((-x)^2)/10+(9*x)/10+11/5 = 0

1/10*x^2+9/10*x+11/5 = 0

DELTA = (9/10)^2-(1/10*11/5*4)

DELTA = -7/100

DELTA < 0

x belongs to the empty set

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