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Q.

Let the circle S:36x2+36y2-108x+120y+C=0. be such that it neither intersects nor touches the coordinate axis. If the point of intersection of the lines x-2y=4 and 2x-y=5 lies inside the circle S, then
 

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a

100 < c < 165

b

100 < c < 156

c

81 < c < 156

d

259<c<133

answer is A.

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Detailed Solution

g2−c<0,f2−c<0&s11<0

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