document.write( "Question 290494: (ab-4)^2(ab+4)^2 \n" ); document.write( "
Algebra.Com's Answer #210209 by richwmiller(17219)\"\" \"About 
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difference of squares
\n" ); document.write( "((ab)^2-16)^2
\n" ); document.write( "a^4*b^4-32*a^2*b^2+256
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