4*(3/x)^2=7

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Solution for 4*(3/x)^2=7 equation: 


D( x )

x = 0

x = 0

x = 0

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

4*(3/x)^2 = 7 // - 7

4*(3/x)^2-7 = 0

36*x^-2 = 7 // : 36

x^-2 = 7/36

-2 < 0

1/(x^2) = 7/36 // * x^2

1 = 7/36*x^2 // : 7/36

36/7 = x^2

x^2 = 36/7 // ^ 1/2

abs(x) = (36/7)^(1/2)

x = (36/7)^(1/2) or x = -(36/7)^(1/2)

x in { (36/7)^(1/2), -(36/7)^(1/2) }

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