document.write( "Question 706712: Factor the polynomial using the grouping method\r
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Algebra.Com's Answer #435369 by Edwin McCravy(20060)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "4a² + 12a + 9 - 16b²\r\n" );
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document.write( "Group the first three terms:\r\n" );
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document.write( "(4a² + 12a + 9) - 16b²\r\n" );
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document.write( "Factor the part in parentheses:\r\n" );
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document.write( "(2a+3)(2a+3) - 16b²\r\n" );
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document.write( "(2a+3)² - (4b)²\r\n" );
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document.write( "That's the difference of squares:\r\n" );
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document.write( "[(2a+3) - 4b][(2a+3) + 4b]\r\n" );
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document.write( "(2a + 3 - 4b)(2a + 3 + 4b)\r\n" );
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document.write( "Edwin
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