document.write( "Question 847107: What is the coefficient of xy in the expansion of (x-y)2? \n" ); document.write( "
Algebra.Com's Answer #510155 by ewatrrr(24785)\"\" \"About 
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document.write( "Hi,
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document.write( "What is the coefficient of xy in the expansion of (x-y)2?  -2
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document.write( " (x-y(x-y) = x^2 -2xy + y^2
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document.write( "F	First terms
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document.write( "O	Outside terms  -xy
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document.write( "I	Inside terms   -xy  
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document.write( "                                    -2xy
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document.write( "L	Last terms\r
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