d=1/9x^2

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


x in (-oo:+oo)

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

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

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

-1/9*x^2 = -d // : -1/9

x^2 = 9*d

x^2 = 9*d // ^ 1/2

abs(x) = 3*d^(1/2)

x = 3*d^(1/2) or x = -(3*d^(1/2))

x in { 3*d^(1/2), -(3*d^(1/2)) }

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