document.write( "Question 58252: Which of the following polynomials can be factored as a difference of two squares? \r
\n" ); document.write( "\n" ); document.write( " 16x2 + 1
\n" ); document.write( " 9y2 - 1
\n" ); document.write( " x2 + 4x + 4
\n" ); document.write( " 144a2 + 16
\n" ); document.write( " all of the above \r
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Algebra.Com's Answer #39863 by Earlsdon(6294)\"\" \"About 
You can put this solution on YOUR website!
You'll notice that only one of the possible answers is a \"difference\", and that is:
\n" ); document.write( "\"9y%5E2-1\" and this is: \"%283y%29%5E2+-+1%5E2\" or the difference of two squares.
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