Find the x-coordinate of the vertex of parabola

Question

Solve the below:

Q: Consider the function f(x)=x²+4x+1

a)  Find h, the x-coordinate of the vertex of this parabola.

b)  Substitute the two integers immediately to the left and right of h into the function to find the corresponding y. Fill in the following table. Make sure your x-values are in increasing order in your table.

x	y
h =__