document.write( "Question 407812: I am really needing help with this algebra problem, please help?\r
\n" ); document.write( "\n" ); document.write( "Use the \"difference of squares\" rule to factor the following expression:
\n" ); document.write( "9x^4-25y^2
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Algebra.Com's Answer #287379 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
factor the following expression:
\n" ); document.write( "9x^4-25y^2
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\n" ); document.write( "(3x^2-5y)(3x^2+5y)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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