4/9x^2-1=0 - solution

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Solution for 4/9x^2-1=0 equation:

x in (-oo:+oo)

(4/9)*x^2-1 = 0

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

x^2 = 9/4

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

abs(x) = 3/2

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

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

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