Answer:
k=−(x−h) 2+r 2 +y
Explanation:
Subtract (x−h) from both sides of the equation.
Subtracting (x−h) from itself leaves 0.
Subtract (x−h)from r
Take the square root of both sides of the equation.
Subtract y from both sides of the equation.
subtracting y from itself leaves 0.
Dividing by −1 undoes the multiplication by −1.