document.write( "Question 610813: How is this factored completely?
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Algebra.Com's Answer #384603 by scott8148(6628)\"\" \"About 
You can put this solution on YOUR website!
common factors ___ 4x (9 - 25y^2)\r
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\n" ); document.write( "\n" ); document.write( "difference of squares ___ 4x (3 + 5y) (3 - 5y)
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