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December 20, 2014

December 20, 2014

Posted by **Keaton** on Thursday, May 27, 2010 at 9:36pm.

can someone help me please. This must turn in tonight

- algebra -
**drwls**, Friday, May 28, 2010 at 8:40am(3-2sqrt7)(3+2sqrt7)

is of the form

(a-b)(a+b)

which equals a^2 - b^2.

That means the answer is 9 - 28 = -19

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