A parabola is given by the equation y = x2 + 4x + 4.

The vertex of the parabola is

. The focus of the parabola is

. The directrix of the parabola is given by the equation y =

.

Note: Separate coordinates inside parentheses with a comma.

Convert the equation into a standard form

y=x2+4x+4

y = (x+2) ^2

From the equation

vertex is located at (-2,0)

Solve for a to get the coordinates of the focus, from the equation

4a=1

a=1/4

Focus is located at (-2, 1/4)

The equation of the directrix

y=-1/4