Circles Part 2

Section: Mathematics
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Question : 43 of 78
 
Marks: +1, -0
Consider a circle C1:x2+y2−4x−2y=α−5. Let its mirror image in the line y=2x+1 be another circle C2 : 5x2+5y2−10fx−10gy+36=0. Let r be the radius of C2. Then α+r is equal to ________.
[8-Apr-2023 shift 1]
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