Select the approximate values of x that are solutions to f(x) = 0. Where f(x) = -2x^2+2x+8

Question

answer choices are:

1. { -1.56, 2.56}

2. { -1, 2}

3. { -1.00, -4.00}

4. { - 0.25, 0.25}

Answer 1

The function f(x)= .

Substitute the values of x is in the function

.

.

So the approximate values of x =.