The calculated equation of the axis of symmetry of the expression 4x² + 2x + 8 is x = -21/8
How to determine the axis of symmetry
From the question, we have the following parameters that can be used in our computation:
4x² + 2x + 8
The axis of symmetry is calculated using
x = -b/2a
Where
a = 4
b = 21
Substitute the known values into the equation
x = -21/(2 * 4)
Evaluate
x = -21/8
Hence, the axis of symmetry of 4x² + 2x + 8 is x = -21/8