3x-9x2/3x

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Solution for 3x-9x2/3x equation: 


x in (-oo:+oo)

3*x-(x*((9*x^2)/3)) = 0

3*x-3*x^3 = 0

3*x-3*x^3 = 0

3*x*(1-x^2) = 0

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

x^2 = 1

x^2 = 1 // ^ 1/2

abs(x) = 1

x = 1 or x = -1

3*x = 0

3*x = 0 // : 3

x = 0

x in { 1, -1, 0 }

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