document.write( "Question 258821: Can someone tell me how to factor the polynomial completely:\r
\n" ); document.write( "\n" ); document.write( "4x^2 - 169
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Algebra.Com's Answer #190526 by Fombitz(32388)\"\" \"About 
You can put this solution on YOUR website!
Whenever you have a difference of squares, it factors as follows.
\n" ); document.write( "\"z%5E2-a%5E2=%28z%2Ba%29%28z-a%29\"
\n" ); document.write( "In your case,
\n" ); document.write( "\"z%5E2=4x%5E2\"
\n" ); document.write( "\"z=2x\"
\n" ); document.write( "\"a%5E2=169\"
\n" ); document.write( "\"a=13\"
\n" ); document.write( "\"4x%5E2-169=%282x-13%29%282x%2B13%29+\"
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