x^2/1.8-x

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Solution for x^2/1.8-x equation: 


x in (-oo:+oo)

(x^2)/1.8-x = 0

0.55555556*x^2-x = 0

DELTA = (-1)^2-(0*0.55555556*4)

DELTA = 1

DELTA > 0

x = (1^(1/2)+1)/(0.55555556*2) or x = (1-1^(1/2))/(0.55555556*2)

x = 1.79999999 or x = 0

x in { 0, 1.79999999 }

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