Solve h^2− 42 = −h using the quadratic formula. a. h = 0 or h = 7 b. h = −6 or h = 7 c. h = 6 or h = −7 d. h = −6 or h = −7

Hi there! The answer is C.h = 6 or h = −7


Add h to both sides of the equation.


First we need to find the discriminant (which can be found using the formula D = b^2 - 4ac)



Now we can plug in our found values into the quadratic formula.



Plug in.


Hence, the answer is C.h = 6 or h = −7

The answer is "a"radius = 12.7 unitsdiameter = radius × 212.7 units × 2 = 25.4 units