1-(49/x^2)=0

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Solution for 1-(49/x^2)=0 equation: 


D( x )

x^2 = 0

x^2 = 0

x^2 = 0

1*x^2 = 0 // : 1

x^2 = 0

x = 0

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

1-(49/(x^2)) = 0

1-49*x^-2 = 0

-49*x^-2 = -1 // : -49

x^-2 = 1/49

-2 < 0

1/(x^2) = 1/49 // * x^2

1 = 1/49*x^2 // : 1/49

49 = x^2

x^2 = 49 // ^ 1/2

abs(x) = 7

x = 7 or x = -7

x in { 7, -7 }

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