What Values of K Make the Intersection of Two Graphs Positive?

[HallsofIvy]

Try completing the square: $x^2- 16k+ 76= (x- ?)^2+ ?$. Now, what values of k make that positive?

 

[Mark44]

Try completing the square: $x^2- 16k+ 76= (x- ?)^2+ ?$. Now, what values of k make that positive?

Been there and done that. See post #27.