SOLUTION: Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -6x2 + 4x + 9.

Algebra ->  Rational-functions -> SOLUTION: Select the approximate values of x that are solutions to f(x) = 0, where f(x) = -6x2 + 4x + 9.      Log On


   

Question 891721: Select the approximate values of x that are solutions to f(x) = 0, where
f(x) = -6x2 + 4x + 9.
Answer by josgarithmetic(39625) About Me  (Show Source):
You can put this solution on YOUR website!
You could try factoring or just go to the general solution of a quadratic equation.

-6x%5E2%2B4x%2B9=0
same as
6x%5E2-4x-9=0

Discriminant, 16+4*6*9=232=2*116=2*2*58=2*2*2*29

x=%284%2B-+sqrt%282%2A2%2A2%2A29%29%29%2F%282%2A6%29----just simplify this.