document.write( "Question 38852This question is from textbook Elementary Algebra
\n" ); document.write( ": Please help me to perform indicated operation and simplify if possible:\r
\n" ); document.write( "\n" ); document.write( "5x over x^2-9 minus 4 over 3-x
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Algebra.Com's Answer #25005 by fractalier(6550)\"\" \"About 
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\n" ); document.write( "5x / (x^2 - 9) - 4 / (3 - x) =
\n" ); document.write( "5x / (x^2 - 9) + 4 / (x - 3) = (notice that trick)
\n" ); document.write( "5x / (x+3)(x-3) + 4 / (x - 3) =
\n" ); document.write( "5x / (x+3)(x-3) + 4(x+3) / (x+3)(x-3) (making denominators the same)
\n" ); document.write( "[5x + 4(x+3)] / (x+3)(x-3) =
\n" ); document.write( "[5x + 4x + 12] / (x+3)(x-3) =
\n" ); document.write( "(9x + 12) / (x+3)(x-3)
\n" ); document.write( "That's about as far as you can go...you could factor the numerator into 3(3x+4) but it doesn't help simplify things...
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