Respuesta :

The answer is C. Use vertex form which is a(x-h)^2+k
y = x^2 − 16x + 17 
y = (x^2 − 16x + 64) + 17 − 64 
y = (x − 8)^2 − 47

So, C is the answer.

I hope this explains! Good luck with you Maths!
If my answer was the most helping, a brainliest would be appreciated.