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October 22, 2014

October 22, 2014

Posted by **Liz** on Sunday, October 13, 2013 at 11:53pm.

2x^2+ 4000/x +10

- calculus -
**Steve**, Monday, October 14, 2013 at 12:01amy' = 2(x^2+20x-2000)/(x+10)^2

so, we just need to find where

x^2+20x-2000 = 0

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