document.write( "Question 640409: Could you help me with this problem about factoring polynomials completely\r
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Algebra.Com's Answer #403213 by jim_thompson5910(35256)\"\" \"About 
You can put this solution on YOUR website!
Use the difference of squares rule\r
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\n" ); document.write( "\n" ); document.write( "x^2-49 \r
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\n" ); document.write( "\n" ); document.write( "x^2-7^2\r
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\n" ); document.write( "\n" ); document.write( "(x-7)(x+7)\r
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\n" ); document.write( "\n" ); document.write( "So x^2-49 completely factors to (x-7)(x+7)
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