document.write( "Question 478912: Is 4x^2 – 16 the difference of two squares? Is so, how does it factor? \n" ); document.write( "
Algebra.Com's Answer #328151 by Earlsdon(6294)\"\" \"About 
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\"4x%5E2-16\" is the difference of two squares.
\n" ); document.write( "In general, these will factor as follows:
\n" ); document.write( "\"a%5E2-b%5E2+=+%28a%2Bb%29%28a-b%29\" so, in this problem we get:
\n" ); document.write( "\"4x%5E2-16+=+%282x%29%5E2-%284%29%5E2\" = \"%282x%2B4%29%282x-4%29\"
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