document.write( "Question 251443: Simplify if possible:\r
\n" ); document.write( "\n" ); document.write( "x^2-4x-21
\n" ); document.write( "_________
\n" ); document.write( "x^2+2x-63 \n" ); document.write( "

Algebra.Com's Answer #183133 by oberobic(2304) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"%28x%5E2-4x-21%29%2F%28x%5E2%2B2x-63%29\"$
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\n" ); document.write( "Factoring the numerator:
\n" ); document.write( " $\"x%5E2+-4x+-21+=+%28x-7%29%28x%2B4%29\"$
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\n" ); document.write( "Factoring the denominator:
\n" ); document.write( " $\"x%5E2+%2B2x+-63+=+%28x-7%29%28x%2B9%29\"$
\n" ); document.write( ".
\n" ); document.write( "The '(x-7)' factors cancel.
\n" ); document.write( ".
\n" ); document.write( " $\"%28x%2B4%29%2F%28x%2B9%29\"$ \n" ); document.write( "

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