(x-4)/(x^2-4)

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Solution for (x-4)/(x^2-4) equation: 


D( x )

x^2-4 = 0

x^2-4 = 0

x^2-4 = 0

1*x^2 = 4 // : 1

x^2 = 4

x^2 = 4 // ^ 1/2

abs(x) = 2

x = 2 or x = -2

x in (-oo:-2) U (-2:2) U (2:+oo)

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

x-4 = 0 // + 4

x = 4

x = 4

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