0.2=x^2/55-x

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Solution for 0.2=x^2/55-x equation: 


x in (-oo:+oo)

0.2 = (x^2)/55-x // - (x^2)/55-x

x-((x^2)/55)+0.2 = 0

x-1/55*x^2+0.2 = 0

DELTA = 1^2-(-1/55*0.2*4)

DELTA = 1.014545456

DELTA > 0

x = (1.014545456^(1/2)-1)/(-1/55*2) or x = (-1.014545456^(1/2)-1)/(-1/55*2)

x = -55/2*(1.014545456^(1/2)-1) or x = 55/2*(1.014545456^(1/2)+1)

x in { -55/2*(1.014545456^(1/2)-1), 55/2*(1.014545456^(1/2)+1) }

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