document.write( "Question 447295: FACTOR.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "21x^2 + 7x\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #307967 by jorel1380(3719)\"\" \"About 
You can put this solution on YOUR website!
21x2+7x=7x(3x+1).. \n" ); document.write( "
\n" );