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

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


x in (-oo:+oo)

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

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

( 1/9*x^2-4 )

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

x^2 = 36

x^2 = 36 // ^ 1/2

abs(x) = 6

x = 6 or x = -6

( 2 )

2 = 0

x belongs to the empty set

x in { 6, -6 }

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