12.81=x/2x

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Solution for 12.81=x/2x equation: 


x in (-oo:+oo)

12.81 = (x/2)*x // - (x/2)*x

12.81-((x/2)*x) = 0

(-1/2)*x^2+12.81 = 0

-1/2*x^2 = -12.81 // : -1/2

x^2 = 25.62

x^2 = 25.62 // ^ 1/2

abs(x) = 25.62^(1/2)

x = 25.62^(1/2) or x = -25.62^(1/2)

x in { 25.62^(1/2), -25.62^(1/2) }

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