document.write( "Question 941521: Factor the trinomial 10a^2+21a+9 \n" ); document.write( "
Algebra.Com's Answer #573932 by MathLover1(20850)\"\" \"About 
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\n" ); document.write( "\"10a%5E2%2B21a%2B9\"\r
\n" ); document.write( "\n" ); document.write( "\"10a%5E2%2B15a%2B6a%2B9\"\r
\n" ); document.write( "\n" ); document.write( "\"%2810a%5E2%2B15a%29%2B%286a%2B9%29\"\r
\n" ); document.write( "\n" ); document.write( "\"5a%282a%2B3%29%2B3%282a%2B3%29\"\r
\n" ); document.write( "\n" ); document.write( "\"%285a%2B3%29+%282a%2B3%29\"
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