+129850 -2x^2 - 4x
Note.....this parabola has real roots .....and we can solve this by finding these roots
-2x^2 - 4x = 0
-2x(x + 2) = 0 so x = 0 is a root and so is x = -2
The axis of symmetry will be half-way between these at x = - 1
Here's the graph to prove this : https://www.desmos.com/calculator/onfes11awf
