document.write( "Question 480485: I was helping another user over email, and was ask this question. I am not certain of the answer and do not want to give any mis-information.\r
\n" ); document.write( "\n" ); document.write( "(-a^2 + b^2)(a^2 + b^2)\r
\n" ); document.write( "\n" ); document.write( "If you could help, it would be appreciated.\r
\n" ); document.write( "\n" ); document.write( "Cleomenius.
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Algebra.Com's Answer #332629 by lwsshak3(11628)\"\" \"About 
You can put this solution on YOUR website!
(-a^2 + b^2)(a^2 + b^2)
\n" ); document.write( "-(a^2-b^2)(a^2+b^2)
\n" ); document.write( "difference of squares
\n" ); document.write( "-(a^4-b^4)
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