Given data;
[tex]y=x^2+8x+20[/tex]
To convert it to vertex form.
The vertex of the above function is, (-4,4).
the general equation is,
[tex]y=a(x-h)^2+k[/tex]
Thus, the vertex form of the quadratic equaion is,
[tex]y=(x+4)^2+4[/tex]
The answer is option a.
