document.write( "Question 604578: State the domain of the rational function. \r
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document.write( "g(x)= x-8/x+3 \n" );
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Algebra.Com's Answer #381269 by nerdybill(7384)![]() ![]() You can put this solution on YOUR website! State the domain of the rational function. \n" ); document.write( "g(x)= x-8/(x+3) \n" ); document.write( ". \n" ); document.write( "The \"domain\" specifies all possible values of x. \n" ); document.write( "In this case, you just want to make sure the denominator is not zero because dividing by zero is undefined. \n" ); document.write( "So, we set the denominator to zero to find the value x can't take: \n" ); document.write( "x+3=0 \n" ); document.write( "x = -3 \n" ); document.write( "So, the domain is all real numbers except -3. Or, you can state it like: \n" ); document.write( "(-oo, -3) U (-3, +oo) \n" ); document.write( "where \n" ); document.write( "oo stands for infinity \n" ); document.write( " \n" ); document.write( " |