15/x^2-4=0

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Solution for 15/x^2-4=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)

15/(x^2)-4 = 0

15*x^-2 = 4 // : 15

x^-2 = 4/15

-2 < 0

1/(x^2) = 4/15 // * x^2

1 = 4/15*x^2 // : 4/15

15/4 = x^2

x^2 = 15/4 // ^ 1/2

abs(x) = (15/4)^(1/2)

x = (15/4)^(1/2) or x = -(15/4)^(1/2)

x in { (15/4)^(1/2), -(15/4)^(1/2) }

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