document.write( "Question 601991: I need to factor:\r
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Algebra.Com's Answer #380076 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
16 (16x^4 - 1)\r
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\n" ); document.write( "\n" ); document.write( "16 (4x^2 + 1)(4x^2 - 1)\r
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\n" ); document.write( "\n" ); document.write( "16 (4x^2 + 1)(2x + 1)(2x - 1)
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