Touch x-axis

Find the equations of circles that pass through points A (-2; 4) and B (0; 2) and touch the x-axis.

Result

a = (Correct answer is: a=(x+2)^2+(y-2)^2=4) Wrong answer
b = (Correct answer is: b=(x-6)^2+(y-10)^2=100) Wrong answer

Step-by-step explanation:

b=(x−6)2+(y−10)2=100

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Math student
how do you end up with n=r ?

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