The quadratic formula is 

So the solution for k is 16.
Hope that helps!
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Hey there! I'm happy to help!
Here's how to find the distance between any two points.
Find the difference of the x values.
-5-7=-12
Square it.
-12²=144
Find the difference of the y values.
6-3=3
Square that.
3²=9
Add the two numbers we got.
144+9=153
√153≈ 12.37.
Have a wonderful day! :D
Hello!
You cannot make a triangle with two right angles
The answer is right angles
Hope this helps!