0.20=x^2/65-x

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Solution for 0.20=x^2/65-x equation: 


x in (-oo:+oo)

0.2 = (x^2)/65-x // - (x^2)/65-x

x-((x^2)/65)+0.2 = 0

x-1/65*x^2+0.2 = 0

DELTA = 1^2-(-1/65*0.2*4)

DELTA = 1.012307696

DELTA > 0

x = (1.012307696^(1/2)-1)/(-1/65*2) or x = (-1.012307696^(1/2)-1)/(-1/65*2)

x = -65/2*(1.012307696^(1/2)-1) or x = 65/2*(1.012307696^(1/2)+1)

x in { -65/2*(1.012307696^(1/2)-1), 65/2*(1.012307696^(1/2)+1) }

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