document.write( "Question 186497: Hello.
\n" ); document.write( "I'm needing some help with checking what I did wrong on this problem:
\n" ); document.write( "Factor each completely. Some may require several steps.\r
\n" ); document.write( "\n" ); document.write( "a^4 - 16\r
\n" ); document.write( "\n" ); document.write( "thanks!
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Algebra.Com's Answer #139749 by Earlsdon(6294)\"\" \"About 
You can put this solution on YOUR website!
Factor\"
\n" ); document.write( "\"a%5E4-16+=+%28a%5E2-4%29%28a%5E2%2B4%29\"= \"%28a-2%29%28a%2B2%29%28a%5E2%2B4%29\"
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