For this problem, you will encode the logic of the Quadratic Formula as Python math expressions. If you don’t recall, the quadratic formula helps you determine the x coordinates where a parabola crosses over the x-axis, as shown visually in the image below (the red dots are the x coordinates where the red line crosses over the axis).

A red parabola opening upwards that crosses the horizontal x-axis at two points, each marked with a red dot; its lowest point is marked with a purple dot.

\[x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}\]

Because of the plus/minus operator in the formula, you will need to calculate the formula twice: once where you subtract and once where you add. In both cases, encode the formula as shown, substitute a, b, and c for the appropriate values, and print the final result. Print the result where you add first.

The values to substitute for the variables are:

a = 2
b = 4
c = -6

Hint: You can do square roots by using a fractional exponent (e.g., 4 ** .5 is the square root of 4).