2x-5.5=-x/5*1/2x

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Solution for 2x-5.5=-x/5*1/2x equation: 


x in (-oo:+oo)

2*x-5.5 = ((1*(-x/5))/2)*x // - ((1*(-x/5))/2)*x

2*x-(((1*(-x/5))/2)*x)-5.5 = 0

(1/10)*x^2+2*x-5.5 = 0

1/10*x^2+2*x-5.5 = 0

DELTA = 2^2-(-5.5*1/10*4)

DELTA = 6.2

DELTA > 0

x = (6.2^(1/2)-2)/(1/10*2) or x = (-6.2^(1/2)-2)/(1/10*2)

x = 5*(6.2^(1/2)-2) or x = -5*(6.2^(1/2)+2)

x in { -5*(6.2^(1/2)+2), 5*(6.2^(1/2)-2) }

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