document.write( "Question 48501: IS the following binomial a difference of squares?\r
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Algebra.Com's Answer #32089 by AnlytcPhil(1806) $\"\"$ $\"About$

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IS the following binomial a difference of squares?\r\n" );
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document.write( "9a² - 8b²\r\n" );
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document.write( "No because 8 is not a perfect square.\r\n" );
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document.write( "Edwin\r\n" );
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document.write( "Note that if the 8 had been, say a 4, and it had been\r\n" );
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document.write( "9a² - 4b²\r\n" );
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document.write( "instead, then it could have been written as\r\n" );
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document.write( "(3a)² - (2b)²\r\n" );
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document.write( "and then it would have been a difference of squares.\r\n" );
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document.write( "But with the 8 it is not.

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