x2=4/9

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Solution for x2=4/9 equation: 


x in (-oo:+oo)

x^2 = 4/9 // - 4/9

x^2-(4/9) = 0

x^2-4/9 = 0

1*x^2 = 4/9 // : 1

x^2 = 4/9

x^2 = 4/9 // ^ 1/2

abs(x) = 2/3

x = 2/3 or x = -2/3

x in { 2/3, -2/3 }

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