x^-2=9/16

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Solution for x^-2=9/16 equation: 


D( x )

x = 0

x = 0

x = 0

x in (-oo:0) U (0:+oo)

x^-2 = 9/16 // - 9/16

x^-2-(9/16) = 0

x^-2-9/16 = 0

1*x^-2 = 9/16 // : 1

x^-2 = 9/16

-2 < 0

1/(x^2) = 9/16 // * x^2

1 = 9/16*x^2 // : 9/16

16/9 = x^2

x^2 = 16/9 // ^ 1/2

abs(x) = 4/3

x = 4/3 or x = -4/3

x in { 4/3, -4/3 }

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