document.write( "Question 420038: What is the factored form of the expression 4x squared minus 81y squared? \n" ); document.write( "
Algebra.Com's Answer #293556 by jim_thompson5910(35256)\"\" \"About 
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\"4x%5E2-81y%5E2=%282x%29%5E2-%289y%29%5E2=%282x%2B9y%29%282x-9y%29\"\r
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\n" ); document.write( "\n" ); document.write( "So \"4x%5E2-81y%5E2=%282x%2B9y%29%282x-9y%29\"\r
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