document.write( "Question 309793: Factor completly 81x^2 - 441y^2\r
\n" );
document.write( "\n" );
document.write( "I was able to break down the first part but had problems breaking down the 441y^2 \n" );
document.write( "
Algebra.Com's Answer #221560 by palanisamy(496) ![]() You can put this solution on YOUR website! 81x^2-441y^2 \n" ); document.write( "=(9x)^2-(21y)^2 \n" ); document.write( "=(9x+21y)(9x-21Y) \n" ); document.write( " |