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document.write( "Hi,\r \n" );
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document.write( "find all numbers for which the rational expression is undefined \n" );
document.write( "A rational expression is undefined whenever the dnominator is equal to zero \n" );
document.write( "w = 3 or w = -1 would cause the denominator in this expression to = 0 \n" );
document.write( "w = 3 or w = -1 would make this rational expression undefined \n" );
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