I want to say 5 but I'm not sure
Answer:
center = (3, 0)
radius = 2
Step-by-step explanation:
Standard equation of a circle: 
(where (h, k) is the center of the circle and r is the radius)
Given equation:

Rewrite in standard form:

Therefore
- center = (3, 0)
- radius = 2
Answer:
5.736x^4 - 2x^2 +22x - 54
Step-by-step explanation: