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Question

The slope of the radical axis of the circles (x+2)2+(y+3)2=25 and
(x+1)2+(y1)2=25 is

A
14
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B
14
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C
4
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D
12
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Solution

The correct option is B 14
eqn of radial axis is s1s2=0
((x+2)2+(y+3)225)((x+1)2+(y1)225)=0
2x+8y11=0
slope of radial axis=28=14

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