Answer:
(x -2)² +y² = 16
Step-by-step explanation:
The circle has its center at (h, k) = (2, 0), and has a radius of r = 4. The standard form equation is ...
(x -h)² +(y -k)² = r²
For the given values of (h, k) and r, this equation is ...
(x -2)² +y² = 16
Answer:

Step-by-step explanation:
Use the distributive property of equality to multiply and get:

Simplify by combining like terms to get your end result:

Answer:
D)6 units
Step-by-step explanation:
the answer is D because since side AB have the same y coordinate then you would have to either subtract or add the x. if one point on x is negative and the other is positive then you would add. but if they were both positive or both negative then you would subtract the x.