document.write( "Question 150264: what is domain x^3 - X^2 - 2x +2/x^2-1 \n" ); document.write( "

Algebra.Com's Answer #110250 by Fombitz(32388) $\"\"$ $\"About$

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$\"f%28x%29=%28x%5E3-x%5E2-2x%2B2%29%2F%28x%5E2-1%29\"$
\n" ); document.write( "The domain is all x where f(x) is defined.
\n" ); document.write( "This function, f(x), is undefined when the denominator equals zero.
\n" ); document.write( " $\"x%5E2-1=0\"$
\n" ); document.write( " $\"x%5E2=1\"$
\n" ); document.write( " $\"x=1\"$ and $\"x=-1\"$
\n" ); document.write( "Therefore the domain is ( $\"-infinity\"$ , $\"infinity\"$ ) with the exceptions of x=1 and x=-1.
\n" ); document.write( "More formally,
\n" ); document.write( "( $\"-infinity\"$ , $\"-1\"$ )U( $\"-1\"$ , $\"1\"$ )U( $\"1\"$ , $\"infinity\"$ )
\n" ); document.write( "where the open parentheses signifies that the value is not included. \n" ); document.write( "

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