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September 21, 2014

September 21, 2014

Posted by **christina** on Tuesday, September 4, 2007 at 9:58pm.

5x^2 - 5x-60

81-x^4

18a^2b-50b

- math -
**Mischa**, Tuesday, September 4, 2007 at 10:16pm(5x-20)(x+3)

-(x^2-9)(x^2+9)

Then are you sure the third one is written right? 18a^2b- is a to the 2b or is b something else

- math -
**anonymous**, Tuesday, September 4, 2007 at 10:21pmits A squared b

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