document.write( "Question 110712: If you believe that a polynomial is not factorable, label it as prime. \r
\n" ); document.write( "\n" ); document.write( "Factor completely:
\n" ); document.write( "4x^2–36y^2\r
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Algebra.Com's Answer #80676 by solver91311(24713) $\"\"$ $\"About$

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This is a difference of two squares problem.
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\n" ); document.write( " $\"a%5E2-b%5E2=%28a%2Bb%29%28a-b%29\"$
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\n" ); document.write( "In this case, $\"a+=sqrt%284x%5E2%29=+2x\"$ and $\"b=sqrt%2836y%5E2%29=+6y\"$ , so we can write:
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\n" ); document.write( " $\"%282x%2B6y%29%282x-6y%29\"$ \n" ); document.write( "

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