document.write( "Question 395282: I couldn't find the proper place to submit this question, because you do not have a pre-calculus section on your website. Hopefully you can still answer this question.\r
\n" );
document.write( "\n" );
document.write( " (9x^2-24x-57)/(x+1)(x+3)(x-5) It's a partial fraction decomposition problem. I haven't done any of these in a while, so I can't remember what to do with (9x^2-24x-57).\r
\n" );
document.write( "\n" );
document.write( "Thanks \n" );
document.write( "
Algebra.Com's Answer #280539 by jrfrunner(365)![]() ![]() You can put this solution on YOUR website! set up the following equation \n" ); document.write( " \n" ); document.write( "- \n" ); document.write( "next multiply both sides by the common denominator (x+1)(x+3)(x-5) \n" ); document.write( "- \n" ); document.write( " \n" ); document.write( "- \n" ); document.write( "at this point you can expand out all terms, then combined common terms and set correponding parts equal yielding a system of equation to solve for A,B and C \n" ); document.write( "but another alternative is to select \"convenient values of x and solve \n" ); document.write( "-- \n" ); document.write( "x=-1: \n" ); document.write( "9+24-57=-12A or A=-24/-12=2 \n" ); document.write( "x=-3: \n" ); document.write( "81+72-57=72B or B=96/72=4/3 \n" ); document.write( "x=5: \n" ); document.write( "225-120-57=48C or C=48/48=1 \n" ); document.write( "== \n" ); document.write( "if I did my math correctly \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |