document.write( "Question 888158: How do you factor this expression: z^4 - w^2 +w -z^2 \n" ); document.write( "
Algebra.Com's Answer #537124 by Edwin McCravy(20059)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "\"z%5E4+-+w%5E2+%2Bw+-z%5E2\"\r\n" );
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document.write( "Reverse the last two terms to get them in the same\r\n" );
document.write( "\"alphabetical\" order as the first two terms\r\n" );
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document.write( "\"z%5E4+-+w%5E2-z%5E2%2Bw\"\r\n" );
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document.write( "Factor 1 out of the first two terms.\r\n" );
document.write( "Factor -1 out of the last two terms:\r\n" );
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document.write( "\"1%28z%5E4+-+w%5E2%29-1%28z%5E2-w%29\"\r\n" );
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document.write( "Factor the expression in the first parentheses as\r\n" );
document.write( "the difference of two squares: \r\n" );
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document.write( "\"1%28z%5E2+-+w%29%28z%5E2%2Bw%29-1%28z%5E2-w%29\"\r\n" );
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document.write( "Factor out common factor \"%28z%5E2-w%29\"\r\n" );
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document.write( "\"%28z%5E2-w%29%281%28z%5E2%2Bw%29-1%29\"\r\n" );
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document.write( "Remove the inner parentheses by distributing the 1\r\n" );
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document.write( "\"%28z%5E2-w%29%28z%5E2%2Bw-1%29\"\r\n" );
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document.write( "Edwin
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