Verified Answer :

Answer:

\(Circles\thinspace (x - 0)^2 + (y - 0)^2 = 72\thinspace and \thinspace (x - 4)^2 + (y - 0)^2 = 74\text{ have their centers on the x-axis.}\)    

Step-by-step explanation:

Given the equations of circle. we have to find the equation of circle whose center on the x-axis.

The standard form of equation of circle is  

\((x-h)^2+(y-k)^2=r^2\)

where (h,k) is center and r is radius.

Given equations are

\((x - 2)^2 + (y + 3)^2 = 2\)            Center:(2,-3)

\((x - 0)^2 + (y - 3)^2 = 23\)           Center:(0,3)

\((x - 0)^2 + (y - 0)^2 = 72\)           Center:(0,0)

\((x - 4)^2 + (y - 0)^2 = 74\)           Center:(4,0)

The points with ordinate 0 lies on x-axis

Hence, \(Circles\thinspace (x - 0)^2 + (y - 0)^2 = 72\thinspace and \thinspace (x - 4)^2 + (y - 0)^2 = 74\text{ have their centers on the x-axis.}\)  

Answer:

c and d

Step-by-step explanation: