(2x+8)/((x^2)-16)

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Solution for (2x+8)/((x^2)-16) equation: 


D( x )

x^2-16 = 0

x^2-16 = 0

x^2-16 = 0

1*x^2 = 16 // : 1

x^2 = 16

x^2 = 16 // ^ 1/2

abs(x) = 4

x = 4 or x = -4

x in (-oo:-4) U (-4:4) U (4:+oo)

(2*x+8)/(x^2-16) = 0

2*x+8 = 0 // - 8

2*x = -8 // : 2

x = -8/2

x = -4

x in { -4} 

x belongs to the empty set

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