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November 23, 2014

November 23, 2014

Posted by **ki** on Saturday, March 23, 2013 at 6:40pm.

3n squared - 3

- MS. SUE!!!!!! -
**Reiny**, Saturday, March 23, 2013 at 8:43pm3n^2 - 3

= 3(n^2 - 1) -----> using common factor

= 3(n-1)(n+1) ----> difference of squares

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