Tuesday

September 16, 2014

September 16, 2014

Posted by **Rick** on Tuesday, October 25, 2011 at 11:32pm.

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2x^2+5x<3

- Math -
**Steve**, Wednesday, October 26, 2011 at 1:27pm2x^2 + 5x - 3 < 0

(2x-1)(x+3) < 0

If a product is negative, one factor must be negative, the other positive. So, either

2x-1 > 0 and x+3 < 0

or

2x-1 < 0 and x+3 > 0

-3 < x < 1/2

Graph the function and you'll see this is the case

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