Formalas to Remember
Quiz yourself by thinking what should be in each of the black spaces below before clicking on it to display the answer.
|x2 + y2||(x+y)(x-y)|
|x2 + 2xy + y2||(x+y)(x+y)|
|x2 + 2xy + y2||(x-y)(x-y)|
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Created by: leeumar on 2009-10-01