Radius is half of the diameter so the radius of 4 is 2
Answer:

Step-by-step explanation:
To solve for the quotient, perform long division with the polynomials and write a remainder if necessary.
_x___-2_______
x - 1 | x2 + 0x - 4
x2 - 2x
_______________
-2x - 4
-2x + 2
_______________
-2
So the solution is 