Posted by **Anonymous** on Saturday, April 6, 2013 at 2:53pm.

Select the approximate values of x that are solutions to f(x) = 0, where

f(x) = -2x^2 + 5x + 7.

a) {3.50, –1.00}

b) {-2, 5}

c) {–2.50, –3.50}

d) {–0.29, 0.71}

- math -
**MathMate**, Saturday, April 6, 2013 at 6:09pm
The roots p,q, of the equation

ax²+bx+c=0

have the properties that:

p*q = c/a

p+q =-b/a

Check each of the solution sets above,

c/a=-3.5

If p*q ≠ -3.5, then p and q are not solutions to the equation.

If p*q = -3.5, then check if p+q = -b/a=2.5.

If both conditions are satisfied, p and q form the solution set to the equation.

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