A) 16
B) 8
C) 64
D) \[-64\]
E) \[-8\]
Correct Answer: C
Solution :
\[y=({{x}^{2}}-2\times 8\times x+64)\] \[{{y}^{2}}={{(x-8)}^{2}}\]has vertex (8, 0) \[\therefore \] \[k=64\]
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