SOLUTION: factor each polynomial x^2-2xy+y^2-4

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Question 65035: factor each polynomial
x^2-2xy+y^2-4
Answer by 303795(602) About Me  (Show Source):
You can put this solution on YOUR website!
x%5E2-2xy%2By%5E2-4
%28x%5E2-2xy%2By%5E2%29-4
%28x-y%29%5E2-4
%28x-y%29%5E2-2%5E2
ie A difference of squares
%28%28x-y%29-2%29%28%28x-y%29%2B2%29
%28x-y-2%29%28x-y%2B2%29