document.write( "Question 285619: r^3-5r/r^2-9 find all the numbers for which the rational expression is undefined. \n" ); document.write( "
Algebra.Com's Answer #207027 by stanbon(75887)\"\" \"About 
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r^3-5r/r^2-9 find all the numbers for which the rational expression is undefined.
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\n" ); document.write( "r^3-5r/r^2-9
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\n" ); document.write( "Factor:
\n" ); document.write( "(r(r^2-5))/[(r-3)(r+3)]
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\n" ); document.write( "Undefined for r = 3 and for r = -3
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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