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interval notation

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1 Answer

 f(x) =  ( X -4 ) / (X2 -7x - 8) = ( X - 4 ) / ( X - 8 ) ( X + 1)
 
   Domain:
                   X ε ( - ∞, -1) U X ε( -1, 8) u xε ( 8 ,+∞)

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