document.write( "Question 229757: find the fifth term in the binomial expansion of (2x - y)^6 \n" ); document.write( "
Algebra.Com's Answer #170265 by Edwin McCravy(20055)\"\" \"About 
You can put this solution on YOUR website!
find the fifth term in the binomial expansion of (2x - y)^6
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document.write( "The \"R\"th term of \"%28A%2BB%29%5EN\" is given by\r\n" );
document.write( "this expression:\r\n" );
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document.write( "\"%28matrix%282%2C1%2CN%2CR-1%29%29A%5E%28N-R%2B1%29B%5E%28R-1%29\"\r\n" );
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document.write( "where \"%28matrix%282%2C1%2Cp%2Cq%29%29\" means the same as \"C%28p%2Cq%29\" or \"pCq\" \r\n" );
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document.write( "In your problem \"A=2x\", \"B=-y\", \"N=6\", \"R=5\"\r\n" );
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document.write( "So we substitute those and get\r\n" );
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document.write( " \"%28matrix%282%2C1%2C6%2C5-1%29%29%282x%29%5E%286-5%2B1%29%28-y%29%5E%285-1%29\"\r\n" );
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document.write( "\"%28matrix%282%2C1%2C6%2C4%29%29%282x%29%5E%282%29%28-y%29%5E%284%29\"\r\n" );
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document.write( "\"%2815%29%284x%5E2%29%28y%5E4%29\"\r\n" );
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document.write( "\"60x%5E2y%5E4\"\r\n" );
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document.write( "Edwin
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