document.write( "Question 1046681: How do I factor a difference of squares with ( ) in it like this one.
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Algebra.Com's Answer #662153 by Edwin McCravy(20065)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "(x+3)2-9\r\n" );
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document.write( "One way to do it, until you learn a shorter way,\r\n" );
document.write( "is to first substitute a single letter, like A,\r\n" );
document.write( "for the part in parentheses, (x+3), and if you \r\n" );
document.write( "need to, you can write 9 as 32.\r\n" );
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document.write( "Then it becomes\r\n" );
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document.write( "A2-32\r\n" );
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document.write( "which factors as\r\n" );
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document.write( "(A-3)(A+3)\r\n" );
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document.write( "Now change the parentheses ( ) to brackets [ ]\r\n" );
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document.write( "[A-3][A+3]\r\n" );
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document.write( "Now put (x+3) in place of the A's\r\n" );
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document.write( "[(x+3)-3][(x+3)+3]\r\n" );
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document.write( "Now remove the ( ) inside\r\n" );
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document.write( "[x+3-3][x+3+3]\r\n" );
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document.write( "Combine like terms:\r\n" );
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document.write( "[x][x+6]\r\n" );
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document.write( "Erase the brackets around the x and change\r\n" );
document.write( "the brackets around the x+6 to parentheses:\r\n" );
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document.write( "x(x+6)\r\n" );
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document.write( "After you've done enough of these, you can \r\n" );
document.write( "shorten the process.\r\n" );
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document.write( "Edwin
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