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October 30, 2014

October 30, 2014

Posted by **ladybub** on Friday, November 23, 2012 at 3:56pm.

11x-3 is greater than or equal to - 4x^2

- college algebra -
**Reiny**, Friday, November 23, 2012 at 6:45pm11x - 3 ≥ -4x^2

4x^2 + 11x - 3 > 0

(x+3)(4x-1) ≥ 0

critical values are x = -3 and x = 1/4

and y = 4x^2 + 11x - 3 is a parabola opening upwards, with intercepts -3 and 1/4 .....

so x ≤ - 3 OR x ≥ 1/4

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