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September 2, 2014

September 2, 2014

Posted by **v** on Thursday, October 2, 2008 at 12:51am.

- math -
**Jenny**, Thursday, October 2, 2008 at 1:47am(10x-9)(10x+9)

- math -
**Math**, Thursday, October 2, 2008 at 10:33am100x2 + 90x - 90x - 81 =

Answer:100x2 - 81

- math -
- math -
**bobpursley**, Thursday, October 2, 2008 at 9:08amcorrect. The difference of two squares it is.

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