document.write( "Question 309793: Factor completly 81x^2 - 441y^2\r
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document.write( "I was able to break down the first part but had problems breaking down the 441y^2 \n" );
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Algebra.Com's Answer #221559 by stanbon(75887) ![]() You can put this solution on YOUR website! Factor completly 81x^2 - 441y^2 \n" ); document.write( "------------------ \n" ); document.write( "441 is 21^2 \n" ); document.write( "---------------------- \n" ); document.write( "(9x-21y)(9x+21y) \n" ); document.write( "==================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |