1/2x^2=2/5/9

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Solution for 1/2x^2=2/5/9 equation: 


x in (-oo:+oo)

(1/2)*x^2 = (2/5)/9 // - (2/5)/9

(1/2)*x^2-((2/5)/9) = 0

(1/2)*x^2-2/45 = 0

1/2*x^2 = 2/45 // : 1/2

x^2 = 4/45

x^2 = 4/45 // ^ 1/2

abs(x) = (4/45)^(1/2)

x = (4/45)^(1/2) or x = -(4/45)^(1/2)

x in { (4/45)^(1/2), -(4/45)^(1/2) }

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