4/9=x2

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Solution for 4/9=x2 equation: 


x in (-oo:+oo)

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

4/9-x^2 = 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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