document.write( "Question 945683: why is the problem shown not factorable with rational numbers:\r
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Algebra.Com's Answer #576833 by Alan3354(69443)\"\" \"About 
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why is the problem shown not factorable with rational numbers:\r
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\n" ); document.write( "1-xy-20x^2y^2 is factorable.
\n" ); document.write( "= (1 + 4xy)*(1 - 5xy)
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