Answer: h=7
Explanation:
By definition the function in vertex form is:
![f(x)=a(x-h)^(2)+k](https://img.qammunity.org/2020/formulas/mathematics/middle-school/j87gvl2yolbhqfr2fl6boeum3fkn2t73vx.png)
Where (h,k) is the vertex of the parabola.
You must group the terms that contain the same variable in the function:
![f(x)=(x^(2)-14x)+29](https://img.qammunity.org/2020/formulas/mathematics/middle-school/3d65kx1648km55akla17nwwy8y3zrdpdec.png)
Complete the square as following:
![f(x)=(x^(2)-14x+49)+29-49](https://img.qammunity.org/2020/formulas/mathematics/middle-school/tewiif8f9s1s3f2q0p9bzk1gym8kb9h97a.png)
Now you must rewrite it as following:
![f(x)=(x-7)^(2)-20](https://img.qammunity.org/2020/formulas/mathematics/middle-school/dq6iwhdouiqgxdvcgkpp448p8jxzf398ug.png)
Then:
h=7