document.write( "Question 660711: I hoping I can get some help on this....find any real numbers for which the rational expression is undefined.....I would love to see how this is done thank you \n" ); document.write( "

Algebra.Com's Answer #411346 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( "\n" ); document.write( "The rational expression is undefined when its denominator is $\"0\"$ .\r
\n" ); document.write( "\n" ); document.write( "one example:\r
\n" ); document.write( "\n" ); document.write( " $\"%28y%2B3%29%2F%28y%5E2-9%29\"$ .....if denominator $\"y%5E2-9=0\"$ , then this rational expression is undefined \r
\n" ); document.write( "\n" ); document.write( " $\"y%5E2-3%5E2=0\"$ will be for $\"x=3\"$ or $\"x=-3\"$
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