I need to find the approx. value for x that are solutions to f(x)=0 for

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

please show steps as the answer I got does not match any of the multiple choices.

1 answer

since you show neither your work nor the choices, it's tough to see where you went wrong.

However, the roots will be equidistant from the axis of symmetry, at

x = 7/10 = 0.7

So, pick the choice where the roots are the same amount above and below 0.7