Posted by **hope** on Sunday, July 20, 2014 at 7:45pm.

Select the approximate values of x that are solutions to f(x)=0, where f(x)=-3x^2+3x+9

- mat/117 -
**Reiny**, Sunday, July 20, 2014 at 8:28pm
-3x^2+3x+9=0

x^2 - x - 3 = 0

x = (1 ±√13)/2

- mat/117 -
**Henry**, Sunday, July 20, 2014 at 8:43pm
F(x) = -3x^2 + 3x + 9 = 0

Divide by -3:

x^2 - x - 3 = 0

Use Quadratic Formula and get:

X = 2.30, and -1.30 = Approx. 2, and 3.

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