What is the approximate values of x that are solutions to f(x) = 0, where f(x) = -8x2 + 4x + 3.

Question

Select the approximate values of x that are solutions to f(x) = 0, where
f(x) = -8x2 + 4x + 3.

Answer 1

A quadratic formula is usually in the form

 

ax²+ bx + c = 0

 

where a, b, and c are coefficients.

 

 

To find the roots of a quadratic equation.  We use the formula    (-b ± √(b² - 4ac)) / 2a. 

The ± sign indicates that you will have two solutions.

 

Since the equation here is  -8x² + 4x + 3 = 0,

 

a = -8

b = 4

c = 3

 

Plug in these values into the formula, and you will have your two solutions.