document.write( "Question 24659: Please help me solve this problem
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\n" ); document.write( "Factor 4x4 - y2
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Algebra.Com's Answer #13146 by AnlytcPhil(1806)\"\" \"About 
You can put this solution on YOUR website!
Please help me solve this problem\r\n" );
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document.write( "Factor 4x4  - y2\r\n" );
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document.write( "That is the difference of two perfect squares.  Write\r\n" );
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document.write( "4x4 as (2x2)2\r\n" );
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document.write( "(2x2)2 - y2\r\n" );
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document.write( "Then use factoring formula:\r\n" );
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document.write( "A2 - B2 factors as [A - B][A + B] \r\n" );
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document.write( "In your problem:\r\n" );
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document.write( "(2x2)2 - y2\r\n" );
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document.write( "A = 2x2 and B = y, so\r\n" );
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document.write( "A2 - B2 = (2x2)2 - y2 =\r\n" );
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document.write( "[A + B][A - B] = [(2x2) - y][(2x2) + y] =\r\n" );
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document.write( "[2x2 - y][2x2 + y] =\r\n" );
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document.write( "(2x2 - y)(2x2 + y)\r\n" );
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document.write( "Edwin\r\n" );
document.write( "AnlytcPhil@aol.com

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