Answer:
Option 2 - The values of h=-6 and k=-30.
Explanation:
Given : Function
![f(x)=x^2+12x+6](https://img.qammunity.org/2020/formulas/mathematics/middle-school/nco6fq9tdwmu1zimlat7mnjz1ejt98rsyv.png)
To find : Which values for h and k are used to write the function f(x) in vertex form?
Solution :
Writing the function in vertex form,
![y=a(x-h)^2+k](https://img.qammunity.org/2020/formulas/mathematics/high-school/7xiq973pej7bis77rj649g420rebwvc4wx.png)
![y=x^2+12x+6](https://img.qammunity.org/2020/formulas/mathematics/college/zisa6m8mvi9p6cs22pvffhhbht8pqq59va.png)
Using the method of completing the square,
![y=(x^2+2* 6* x+6^2)+6-6^2](https://img.qammunity.org/2020/formulas/mathematics/middle-school/i6xzts7amh7vqxhfdokc1s3k4tzqiprbhn.png)
![y=(x+6)^2-30](https://img.qammunity.org/2020/formulas/mathematics/college/hpv1ose7r9pqeupns74pkp08zvh7m2e3nb.png)
On comparing to vertex form,
a=1, h=-6 and k=-30
Therefore, the values of h=-6 and k=-30.