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(x+y)?

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Visit this site: http://www.jimloy.com/algebra/xy2.htm
Author:Jim Loy
Description: Some people might guess that (x+y)^2=x^2+y^2. But we know that: (x+y)^2 = x^2+2xy+y^2. How do we know that? An application of the distributive law with an illustration and a magic trick...
Levels: Middle School (6-8), High School (9-12)
Languages: English
Resource Types: Articles
Math Topics: Polynomials

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