Math links

The Three Cases

Here are the three results we just got:

(a+b)2  = a2 + 2ab + b2 } the "perfect square trinomials"
(a−b)2  = a2 − 2ab + b2
a2 − b2 (a+b)(a−b)   the "difference of squares"

Remember those patterns, they will save you time and help you solve many algebra puzzles.

(a+b)² = a²+2ab+b² - But Why?


a2 − b2


a^2 - b^2 = (a+b)* (a-b) 

Recognizing Patterns  (a+b)2

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