High School Algebra Playlist: Recognizing Structure

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Sometimes, mathematical expressions, such as sin2 θ  − cos2 θ, can look scary to manipulate. But the real skill is in
recognizing that this expression is of the form a2 − b2, and that this pattern came up in Algebra 1 or Algebra 2 as a way
of simplifying an expression by factoring it; the factors are a + b and a − b.

In this module, you will learn and practice the following skills:

  • Recognize common structures within an expression
  • Use those structures to write equivalent expressions
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Lesson tags: 
Advanced Placement (AP)
Creative Commons License: 
Attribution Non-commercial ShareAlike CC (BY-NC-SA)
State: 
District of Columbia