4-x/x^2-16

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Solution for 4-x/x^2-16 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)

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

4-x^-1-16 = 0

-1*x^-1 = 12 // : -1

x^-1 = -12

-1 < 0

1/(x^1) = -12 // * x^1

1 = -12*x^1 // : -12

-1/12 = x^1

x = -1/12

x = -1/12

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