document.write( "Question 44229: rational expressions\r
\n" ); document.write( "\n" ); document.write( "y^2+4y-21 over y^2+13+42\r
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Algebra.Com's Answer #29217 by fractalier(6550)\"\" \"About 
You can put this solution on YOUR website!
Here the technique is always FACTOR and CANCEL, so we have
\n" ); document.write( "y^2+4y-21 / y^2+13+42 =
\n" ); document.write( "(y+7)(y-3) / (y+7)(y+6) =
\n" ); document.write( "(y-3) / (y+6)
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