3.8/x^2=0.7

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Solution for 3.8/x^2=0.7 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)

3.8/(x^2) = 0.7 // - 0.7

3.8/(x^2)-0.7 = 0

3.8*x^-2 = 0.7 // : 3.8

x^-2 = 0.18421053

-2 < 0

1/(x^2) = 0.18421053 // * x^2

1 = 0.18421053*x^2 // : 0.18421053

5.42857132 = x^2

x^2 = 5.42857132 // ^ 1/2

abs(x) = 5.42857132^(1/2)

x = 5.42857132^(1/2) or x = -5.42857132^(1/2)

x in { 5.42857132^(1/2), -5.42857132^(1/2) }

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