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12-6.

Factor each of the following expressions. Note that is the notation that is used for .

  1.  

    Remember that a difference of two squares has a special factoring pattern.
    .

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    Use the same method as part (a).

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    This might look different than the expressions in parts (a) and (b), but you can use the same method to factor it.

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    Think of as one big variable (like ).
    Then use the same method as part (c) to factor it.