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
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Algebra.Com's Answer #221560 by palanisamy(496)\"\" \"About 
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)
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