document.write( "Question 637419: nine x squared minus y to the fourth power \n" ); document.write( "
Algebra.Com's Answer #401713 by asuar010(338)\"\" \"About 
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\"9x%5E2-y%5E4=%283x-y%5E2%29%283x%2By%5E2%29\" \n" ); document.write( "
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